Hướng dẫn for real tasks
Worked examples, clear assumptions and direct calculator links for business, trades, documents, files and everyday work.
Building & masonry
How to calculate concrete for a shed base
Work out finished concrete volume, dry-material allowance, cement bags, sand and aggregate before ordering for a shed base.
Hướng dẫn →Building & masonryHow many cement bags for one cubic metre of concrete?
Estimate cement bag quantity from concrete volume, mix proportions, dry-volume factor, density and the actual bag size sold locally.
Hướng dẫn →Building & masonryHow to calculate concrete blocks for a wall
Estimate concrete block quantity from net wall area, nominal block dimensions, mortar joints and a controlled waste allowance.
Hướng dẫn →Building & masonryHow to estimate mortar materials for brickwork
Plan finished mortar, dry ingredient volume, cement weight, sand weight and cement bag quantity from wall area and mix ratio.
Hướng dẫn →Building & masonryHow many bags of render do I need?
Estimate wet render volume, product mass and whole bags from wall area, coat thickness, density, bag weight and waste.
Hướng dẫn →Building & masonryHow to calculate floor screed quantity and weight
Calculate screed volume, estimated mass and bag count from floor area, average thickness, density, pack size and waste.
Hướng dẫn →Tiling
How much tile grout do I need?
Calculate grout volume, weight and bag quantity using tiled area, tile dimensions, joint width, joint depth, density and waste.
Hướng dẫn →TilingHow many bags of tile adhesive do I need?
Turn a tiled area and manufacturer coverage figure into an adhesive bag count with a visible waste allowance and estimated cost.
Hướng dẫn →Roofing
How to calculate roof pitch from rise and run
Convert roof rise and horizontal run into pitch angle and slope ratio for planning, comparison and material calculations.
Hướng dẫn →RoofingHow to calculate rafter length from roof pitch
Estimate common-rafter slope length from horizontal run, roof pitch and the required overhang.
Hướng dẫn →RoofingHow many roof tiles do I need?
Estimate field-tile quantity from actual roof surface area, manufacturer tiles-per-square-metre coverage and waste.
Hướng dẫn →RoofingHow to estimate gutter capacity for a roof
Estimate design rainwater flow from effective roof catchment area, rainfall intensity and a transparent safety allowance.
Hướng dẫn →Decorating
Landscaping
How many pavers do I need for a patio?
Estimate paver quantity and purchase allowance from paved area, unit dimensions, joints, pattern and cutting waste.
Hướng dẫn →LandscapingHow much gravel do I need?
Convert an area and compacted depth into gravel volume and estimated mass using the selected bulk density.
Hướng dẫn →LandscapingHow to calculate decking boards and waste
Plan board quantity from deck dimensions, board width, gaps, stock lengths and cutting allowance before preparing a final layout.
Hướng dẫn →LandscapingHow many fence panels and posts do I need?
Estimate full fence panels, posts and panel cost from the measured run and actual panel module.
Hướng dẫn →Business & finance
How to remove VAT from a VAT-inclusive price
Find the net amount and VAT element when the starting price already includes VAT at a known rate.
Hướng dẫn →Business & financeProfit margin vs markup: calculation guide
Understand the difference between margin and markup, calculate both correctly and avoid pricing decisions based on the wrong percentage.
Hướng dẫn →Business & financeHow to calculate a business break-even point
Estimate the units or revenue needed to cover fixed costs from unit selling price and variable cost.
Hướng dẫn →Business & financeAgency Rate Calculator: inputs, formulas and planning checks
Estimate a sustainable client rate from staff cost, overhead and target margin. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeCommission Calculator: inputs, formulas and planning checks
Calculate commission, net proceeds and total sales from a configurable rate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeConversion Rate Calculator: inputs, formulas and planning checks
Calculate conversion rate from conversions and total visitors or leads. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeCSV Invoice Export Generator: inputs, formulas and planning checks
Turn invoice line items into a clean CSV export in the browser. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeCustomer Acquisition Cost Calculator: inputs, formulas and planning checks
Calculate CAC from sales and marketing cost and customers acquired. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeCustomer Lifetime Value Calculator: inputs, formulas and planning checks
Estimate customer lifetime value from order value, frequency, margin and lifetime. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeDay Rate Calculator: inputs, formulas and planning checks
Convert annual income goals and working days into a target day rate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeDelivery Note Generator: inputs, formulas and planning checks
Create a printable delivery note with recipient, items and delivery details. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeEmployee Cost Calculator: inputs, formulas and planning checks
Estimate total employment cost from salary, employer charges and benefits. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeFreelance Rate Calculator: inputs, formulas and planning checks
Estimate an hourly freelance rate from annual income, costs and billable hours. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeHourly and Day Rate Converter: inputs, formulas and planning checks
Convert between hourly and day rates using configurable working hours. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeJob Sheet Generator: inputs, formulas and planning checks
Create a printable job sheet with customer, work, materials and sign-off details. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeLate Payment Interest Calculator: inputs, formulas and planning checks
Estimate simple late-payment interest from amount, annual rate and days overdue. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeLead Value Calculator: inputs, formulas and planning checks
Estimate expected lead value from close rate, deal value and gross margin. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeMarketplace Fee Calculator: inputs, formulas and planning checks
Estimate marketplace fees and net proceeds from configurable rates. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financePayment Fee Calculator: inputs, formulas and planning checks
Estimate any payment processor fee using configurable percentage and fixed fees. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financePayment Reference Invoice Generator: inputs, formulas and planning checks
Create a printable invoice with a clear payment reference and remittance details. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financePayPal Fee Calculator: inputs, formulas and planning checks
Estimate PayPal fees with user-supplied percentage and fixed rates. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeProject Cost Calculator: inputs, formulas and planning checks
Estimate project price from hours, hourly rate, expenses and contingency. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financePurchase Order Generator: inputs, formulas and planning checks
Create a printable purchase order with supplier and line-item details. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeQuote Generator: inputs, formulas and planning checks
Create a clean printable quotation with items, tax and validity details. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeReceipt Generator: inputs, formulas and planning checks
Create a simple printable payment receipt in your browser. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeRetail Price Calculator: inputs, formulas and planning checks
Calculate retail price from cost, markup and sales tax. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeROAS Calculator: inputs, formulas and planning checks
Calculate return on ad spend, revenue and break-even ROAS. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeSalary to Hourly Rate Converter: inputs, formulas and planning checks
Convert annual salary to gross hourly, daily and monthly equivalents. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeSales Target Calculator: inputs, formulas and planning checks
Calculate deals and leads required to reach a revenue target. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeSales Tax Calculator: inputs, formulas and planning checks
Add or remove a configurable sales tax rate from a price. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeShipping Cost Calculator: inputs, formulas and planning checks
Estimate shipment cost from base charge, weight, distance and handling. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeStripe Fee Calculator: inputs, formulas and planning checks
Estimate Stripe processing fees with user-supplied percentage and fixed rates. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeTimesheet Generator: inputs, formulas and planning checks
Create a printable timesheet with dated work entries and totals. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business & financeWholesale Price Calculator: inputs, formulas and planning checks
Calculate wholesale price from cost and target margin. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Business documents
Files & documents
How to compress a PDF for email
Reduce a PDF file for email or upload while preserving a useful balance between readability and file size.
Hướng dẫn →Files & documentsExtract PDF Images: safe processing, output quality and download checks
Extract original embedded images from a PDF into a ZIP archive. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsExtract PDF Pages: safe processing, output quality and download checks
Extract selected PDF pages or page ranges into a new document. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsImage Compressor: safe processing, output quality and download checks
Compress JPG, PNG and WEBP images online to reduce file size while keeping useful image quality. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsImage Resizer: safe processing, output quality and download checks
Resize JPG, PNG and WEBP images online by dimensions for websites, social media, documents and everyday use. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsJPG to PDF Converter: safe processing, output quality and download checks
Convert JPG images to PDF online and combine image files into a practical PDF document. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsJPG to PNG Converter: safe processing, output quality and download checks
Convert JPG images to PNG online when you need a PNG image format for editing, transparency or web use. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsJPG to WEBP Converter: safe processing, output quality and download checks
Convert JPG images to WEBP online for modern websites, smaller image files and faster page delivery. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsM4A to MP3 Converter: safe processing, output quality and download checks
Convert M4A audio files to MP3 online for wider compatibility and everyday audio playback. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsMerge PDF: safe processing, output quality and download checks
Merge multiple PDF files online into a single organised document for sharing, storage and submission. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsMOV to MP4 Converter: safe processing, output quality and download checks
Convert MOV video files to MP4 online for broader compatibility across devices, apps and websites. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsMP3 to WAV Converter: safe processing, output quality and download checks
Convert MP3 audio to WAV online for editing, production and workflows that require WAV audio. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsMP4 to GIF Converter: safe processing, output quality and download checks
Convert MP4 video clips to GIF animations online for websites, messages and lightweight visual content. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsOptimise PDF: safe processing, output quality and download checks
Optimise and linearise PDF documents for faster web viewing. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsOrganise PDF: safe processing, output quality and download checks
Reorder PDF pages by choosing the exact page sequence you need. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsPDF to JPG Converter: safe processing, output quality and download checks
Convert PDF pages to JPG images online for previews, sharing, editing and image-based workflows. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsPDF to PNG Converter: safe processing, output quality and download checks
Convert PDF pages to PNG images online for high-quality image output and digital workflows. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsPDF to Text: safe processing, output quality and download checks
Extract readable text from a PDF while preserving useful layout. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsPDF to Word Converter: safe processing, output quality and download checks
Convert PDF files to editable Word documents online for editing, reuse and document workflows. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsProtect PDF: safe processing, output quality and download checks
Add strong password protection to a PDF using AES-256 encryption. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsRemove PDF Pages: safe processing, output quality and download checks
Delete selected pages from a PDF while keeping the remaining pages in order. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsRepair PDF: safe processing, output quality and download checks
Rebuild damaged PDF structure and create a clean output document. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsRotate PDF: safe processing, output quality and download checks
Rotate PDF pages by 90, 180 or 270 degrees while preserving the document layout. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsSplit PDF: safe processing, output quality and download checks
Split PDF files online into separate documents or selected page ranges for easier sharing and organisation. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsUnlock PDF: safe processing, output quality and download checks
Remove PDF password protection when you know the current password. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsWEBP to JPG Converter: safe processing, output quality and download checks
Convert WEBP images to JPG online for compatibility with apps, editors, websites and image workflows. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Files & documentsWord to PDF Converter: safe processing, output quality and download checks
Convert Word documents to PDF online for sharing, printing, archiving and consistent document formatting. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Audio & video
Images
Everyday calculations
Age Calculator: inputs, method and practical checks
Calculate age in years, months and days from a date of birth. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsArea Calculator: inputs, method and practical checks
Calculate rectangle, triangle or circle area. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsAverage Calculator: inputs, method and practical checks
Calculate mean, median, minimum, maximum and total from a list of numbers. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBMI Calculator: inputs, method and practical checks
Calculate body mass index from metric height and weight. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBMR Calculator: inputs, method and practical checks
Estimate basal metabolic rate using the Mifflin-St Jeor equation. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCompound Interest Calculator: inputs, method and practical checks
Calculate compound growth from a starting balance, contribution, rate and term. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsConcrete Calculator: inputs, method and practical checks
Estimate concrete volume from length, width and depth with wastage. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsData Transfer Calculator: inputs, method and practical checks
Estimate download or upload time from file size and connection speed. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDate Difference Calculator: inputs, method and practical checks
Calculate the exact elapsed days and approximate weeks between two dates. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDiscount Calculator: inputs, method and practical checks
Calculate the saving and final price after a percentage discount. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsElectricity Cost Calculator: inputs, method and practical checks
Estimate electricity cost from appliance watts, hours and unit rate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFraction Calculator: inputs, method and practical checks
Add, subtract, multiply or divide two fractions and simplify the result. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFuel Cost Calculator: inputs, method and practical checks
Estimate journey fuel use and cost from distance, efficiency and fuel price. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsLoan Calculator: inputs, method and practical checks
Calculate monthly loan repayments, total interest and the full repayment amount. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsMarkup Calculator: inputs, method and practical checks
Calculate selling price, profit and margin from cost and markup. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsMortgage Calculator: inputs, method and practical checks
Estimate monthly mortgage repayments, total interest and total repayment from the loan, rate and term. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsMPG Converter: inputs, method and practical checks
Convert between UK MPG, US MPG and litres per 100 kilometres. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsPercentage Calculator: inputs, method and practical checks
Calculate percentages, percentage changes and common percentage problems online. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsProfit Calculator: inputs, method and practical checks
Calculate revenue, cost, profit and profit margin online with a simple business profit calculator. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRatio Calculator: inputs, method and practical checks
Simplify a ratio and scale it to a chosen value. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsROI Calculator: inputs, method and practical checks
Calculate return on investment, profit and percentage return online with a clear ROI calculator. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRunning Pace Calculator: inputs, method and practical checks
Calculate running pace and speed from distance and elapsed time. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSavings Goal Calculator: inputs, method and practical checks
Estimate the monthly contribution needed to reach a savings target. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSimple Interest Calculator: inputs, method and practical checks
Calculate simple interest and the final balance for a principal, rate and period. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsStandard Deviation Calculator: inputs, method and practical checks
Calculate population and sample standard deviation from a number set. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsTile Calculator: inputs, method and practical checks
Estimate tile quantity from surface and tile dimensions with wastage. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsTime Duration Calculator: inputs, method and practical checks
Calculate the elapsed time between two clock times. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsTip Calculator: inputs, method and practical checks
Calculate a tip, total bill and per-person share. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsVAT Calculator: inputs, method and practical checks
Calculate VAT, prices excluding VAT and prices including VAT with a straightforward VAT calculator. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsVolume Calculator: inputs, method and practical checks
Calculate box, cylinder or sphere volume. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsAspect Ratio Calculator: inputs, method and practical checks
Scale width or height while preserving an aspect ratio. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBinary to Text Converter: inputs, method and practical checks
Convert space-separated binary bytes back into UTF-8 text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBrick Calculator: inputs, method and practical checks
Estimate bricks, mortar allowance and waste from wall dimensions. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCarpet Calculator: inputs, method and practical checks
Estimate carpet area and cost with a configurable waste allowance. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCase Converter: inputs, method and practical checks
Convert text to upper case, lower case, title case, sentence case or alternating case. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCharacter Counter: inputs, method and practical checks
Count characters with and without spaces, words and lines in text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsColour Contrast Checker: inputs, method and practical checks
Calculate WCAG contrast ratio for two HEX colours. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCountdown Calculator: inputs, method and practical checks
Calculate days, hours and minutes until a future date and time. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCSS Button Generator: inputs, method and practical checks
Create and preview accessible CSS button styles. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDate Add or Subtract Calculator: inputs, method and practical checks
Add or subtract days, weeks, months or years from a date. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDPI Calculator: inputs, method and practical checks
Calculate print DPI from pixel dimensions and physical size. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFence Calculator: inputs, method and practical checks
Estimate fence panels and posts from run length and panel width. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFind and Replace Text: inputs, method and practical checks
Find and replace matching text with optional case sensitivity. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFlooring Calculator: inputs, method and practical checks
Estimate floor area, material quantity and waste allowance. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsHEX to RGB Converter: inputs, method and practical checks
Convert valid three, six or eight-digit HEX colours to RGB values. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsHours Calculator: inputs, method and practical checks
Calculate elapsed hours and minutes between two date-times. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsHSL to RGB Converter: inputs, method and practical checks
Convert hue, saturation and lightness into RGB values. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsImage Resolution Calculator: inputs, method and practical checks
Calculate megapixels, pixel count and print dimensions from resolution. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsInsulation Calculator: inputs, method and practical checks
Estimate insulation packs and cost from area and pack coverage. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsLetter Frequency Counter: inputs, method and practical checks
Count letter and character frequency in a block of text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsList to Text Converter: inputs, method and practical checks
Join text lines into a comma-separated or custom-delimited list. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsLowercase Converter: inputs, method and practical checks
Convert letters in text to lowercase instantly in your browser. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsMulch Calculator: inputs, method and practical checks
Estimate mulch volume from area, depth and waste allowance. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsParagraph Counter: inputs, method and practical checks
Count paragraphs, lines, sentences and words in text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsPlaceholder Image Generator: inputs, method and practical checks
Create a downloadable SVG placeholder with custom dimensions, colours and label. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsPlasterboard Calculator: inputs, method and practical checks
Estimate plasterboard sheets from wall area and sheet dimensions. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsPNG to PDF Converter: safe processing, output quality and download checks
Convert PNG images to PDF online and create a PDF document from one or more PNG files. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsQR Code Generator: inputs, method and practical checks
Generate QR codes online from text, links and useful information for quick scanning. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRadiator Size Calculator: inputs, method and practical checks
Estimate room heat output using room volume and an adjustable heat factor. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsReading Time Calculator: inputs, method and practical checks
Estimate reading and speaking time from a word count. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRemove Duplicate Lines: inputs, method and practical checks
Remove repeated lines while preserving the first occurrence. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRemove Extra Spaces: inputs, method and practical checks
Remove repeated spaces and tidy whitespace without changing words. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRemove Line Breaks: inputs, method and practical checks
Join lines into clean continuous text with controlled spacing. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsReverse Text: inputs, method and practical checks
Reverse text by characters, words or line order. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRGB to HEX Converter: inputs, method and practical checks
Convert red, green and blue channel values into a HEX colour. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRGB to HSL Converter: inputs, method and practical checks
Convert RGB channels into hue, saturation and lightness. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsRoofing Calculator: inputs, method and practical checks
Estimate roof surface and material quantity from plan area and pitch. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSentence Case Converter: inputs, method and practical checks
Convert text into sentence case while preserving paragraph breaks. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSentence Counter: inputs, method and practical checks
Count sentences, words and paragraphs in a passage of text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSlug Generator: inputs, method and practical checks
Turn a title or phrase into a clean, lowercase URL slug. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSocial Image Size Guide: inputs, method and practical checks
Compare commonly used social image dimensions and aspect ratios. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSoil Calculator: inputs, method and practical checks
Estimate soil volume and bags from area and depth. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSolar Panel Calculator: inputs, method and practical checks
Estimate panel count, array size and annual generation from roof space. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsSort Lines: inputs, method and practical checks
Sort text lines alphabetically, naturally or in reverse order. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsText Cleaner: inputs, method and practical checks
Clean smart punctuation, invisible characters and repeated whitespace from pasted text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsText to Binary Converter: inputs, method and practical checks
Convert Unicode text into UTF-8 binary bytes in your browser. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsText to List Converter: inputs, method and practical checks
Convert comma-separated text into one clean item per line. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsTime Zone Converter: inputs, method and practical checks
Convert a date and time between browser-supported IANA time zones. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsTitle Case Converter: inputs, method and practical checks
Convert text into readable title case for headings and titles. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsTurf Calculator: inputs, method and practical checks
Estimate turf area, rolls and cost with waste allowance. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsUppercase Converter: inputs, method and practical checks
Convert letters in text to uppercase instantly in your browser. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsWallpaper Calculator: inputs, method and practical checks
Estimate wallpaper rolls from wall and roll dimensions. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsWord Counter: inputs, method and practical checks
Count words, characters, sentences, paragraphs and estimated reading time in text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsWorking Days Calculator: inputs, method and practical checks
Count weekdays between two dates with optional excluded dates. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsAcres to Hectares Converter: inputs, method and practical checks
Convert acres to hectares instantly with a precise browser-based area converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsAcres to Square feet Converter: inputs, method and practical checks
Convert acres to square feet instantly with a precise browser-based area converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsAcres to Square metres Converter: inputs, method and practical checks
Convert acres to square metres instantly with a precise browser-based area converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsAcres to Square yards Converter: inputs, method and practical checks
Convert acres to square yards instantly with a precise browser-based area converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBar to Kilopascals Converter: inputs, method and practical checks
Convert bar to kilopascals instantly with a precise browser-based pressure converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBar to Pascals Converter: inputs, method and practical checks
Convert bar to pascals instantly with a precise browser-based pressure converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBar to Pounds per square inch Converter: inputs, method and practical checks
Convert bar to pounds per square inch instantly with a precise browser-based pressure converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBar to Standard atmospheres Converter: inputs, method and practical checks
Convert bar to standard atmospheres instantly with a precise browser-based pressure converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBritish thermal units to Joules Converter: inputs, method and practical checks
Convert British thermal units to joules instantly with a precise browser-based energy converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBritish thermal units to Kilojoules Converter: inputs, method and practical checks
Convert British thermal units to kilojoules instantly with a precise browser-based energy converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBritish thermal units to Kilowatt-hours Converter: inputs, method and practical checks
Convert British thermal units to kilowatt-hours instantly with a precise browser-based energy converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBritish thermal units to Watt-hours Converter: inputs, method and practical checks
Convert British thermal units to watt-hours instantly with a precise browser-based energy converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBTU per hour to Kilowatts Converter: inputs, method and practical checks
Convert BTU per hour to kilowatts instantly with a precise browser-based power converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBTU per hour to Mechanical horsepower Converter: inputs, method and practical checks
Convert BTU per hour to mechanical horsepower instantly with a precise browser-based power converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBTU per hour to Watts Converter: inputs, method and practical checks
Convert BTU per hour to watts instantly with a precise browser-based power converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBytes to Gigabytes Converter: inputs, method and practical checks
Convert bytes to gigabytes instantly with a precise browser-based data converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBytes to Kilobytes Converter: inputs, method and practical checks
Convert bytes to kilobytes instantly with a precise browser-based data converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsBytes to Megabytes Converter: inputs, method and practical checks
Convert bytes to megabytes instantly with a precise browser-based data converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCentimetres to Feet Converter: inputs, method and practical checks
Convert centimetres to feet instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCentimetres to Inches Converter: inputs, method and practical checks
Convert centimetres to inches instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCentimetres to Kilometres Converter: inputs, method and practical checks
Convert centimetres to kilometres instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCentimetres to Metres Converter: inputs, method and practical checks
Convert centimetres to metres instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCentimetres to Miles Converter: inputs, method and practical checks
Convert centimetres to miles instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCentimetres to Millimetres Converter: inputs, method and practical checks
Convert centimetres to millimetres instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCentimetres to Yards Converter: inputs, method and practical checks
Convert centimetres to yards instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCubic metres to Litres Converter: inputs, method and practical checks
Convert cubic metres to litres instantly with a precise browser-based volume converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCubic metres to Millilitres Converter: inputs, method and practical checks
Convert cubic metres to millilitres instantly with a precise browser-based volume converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCubic metres to UK gallons Converter: inputs, method and practical checks
Convert cubic metres to UK gallons instantly with a precise browser-based volume converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsCubic metres to US gallons Converter: inputs, method and practical checks
Convert cubic metres to US gallons instantly with a precise browser-based volume converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDays to Hours Converter: inputs, method and practical checks
Convert days to hours instantly with a precise browser-based time converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDays to Minutes Converter: inputs, method and practical checks
Convert days to minutes instantly with a precise browser-based time converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDays to Seconds Converter: inputs, method and practical checks
Convert days to seconds instantly with a precise browser-based time converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Celsius to Degrees Fahrenheit Converter: inputs, method and practical checks
Convert degrees Celsius to degrees Fahrenheit instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Celsius to Degrees Rankine Converter: inputs, method and practical checks
Convert degrees Celsius to degrees Rankine instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Celsius to Kelvin Converter: inputs, method and practical checks
Convert degrees Celsius to kelvin instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Fahrenheit to Degrees Celsius Converter: inputs, method and practical checks
Convert degrees Fahrenheit to degrees Celsius instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Fahrenheit to Degrees Rankine Converter: inputs, method and practical checks
Convert degrees Fahrenheit to degrees Rankine instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Fahrenheit to Kelvin Converter: inputs, method and practical checks
Convert degrees Fahrenheit to kelvin instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Rankine to Degrees Celsius Converter: inputs, method and practical checks
Convert degrees Rankine to degrees Celsius instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Rankine to Degrees Fahrenheit Converter: inputs, method and practical checks
Convert degrees Rankine to degrees Fahrenheit instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsDegrees Rankine to Kelvin Converter: inputs, method and practical checks
Convert degrees Rankine to kelvin instantly with a precise browser-based temperature converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet per second to Kilometres per hour Converter: inputs, method and practical checks
Convert feet per second to kilometres per hour instantly with a precise browser-based speed converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet per second to Knots Converter: inputs, method and practical checks
Convert feet per second to knots instantly with a precise browser-based speed converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet per second to Metres per second Converter: inputs, method and practical checks
Convert feet per second to metres per second instantly with a precise browser-based speed converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet per second to Miles per hour Converter: inputs, method and practical checks
Convert feet per second to miles per hour instantly with a precise browser-based speed converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet to Centimetres Converter: inputs, method and practical checks
Convert feet to centimetres instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet to Inches Converter: inputs, method and practical checks
Convert feet to inches instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet to Kilometres Converter: inputs, method and practical checks
Convert feet to kilometres instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet to Metres Converter: inputs, method and practical checks
Convert feet to metres instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet to Miles Converter: inputs, method and practical checks
Convert feet to miles instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet to Millimetres Converter: inputs, method and practical checks
Convert feet to millimetres instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsFeet to Yards Converter: inputs, method and practical checks
Convert feet to yards instantly with a precise browser-based length converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsGigabytes to Bytes Converter: inputs, method and practical checks
Convert gigabytes to bytes instantly with a precise browser-based data converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsGigabytes to Kilobytes Converter: inputs, method and practical checks
Convert gigabytes to kilobytes instantly with a precise browser-based data converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsGigabytes to Megabytes Converter: inputs, method and practical checks
Convert gigabytes to megabytes instantly with a precise browser-based data converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsGrams to Kilograms Converter: inputs, method and practical checks
Convert grams to kilograms instantly with a precise browser-based mass converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsGrams to Metric tonnes Converter: inputs, method and practical checks
Convert grams to metric tonnes instantly with a precise browser-based mass converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsGrams to Ounces Converter: inputs, method and practical checks
Convert grams to ounces instantly with a precise browser-based mass converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Everyday calculationsGrams to Pounds Converter: inputs, method and practical checks
Convert grams to pounds instantly with a precise browser-based mass converter. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculations
Air Change Calculator: measurements, allowances and result checks
Calculate air changes per hour from room volume and airflow. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsBattery Runtime Calculator: measurements, allowances and result checks
Estimate battery runtime from capacity, voltage, load and usable capacity. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsBend Allowance Calculator: measurements, allowances and result checks
Calculate sheet-metal bend allowance from angle, radius, thickness and K-factor. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsBoard Cutting Optimiser: measurements, allowances and result checks
Optimise linear timber cuts across stock lengths using a practical first-fit plan. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsBoard Foot Calculator: measurements, allowances and result checks
Calculate North American board feet from thickness, width, length and quantity. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsBoiler Size Calculator: measurements, allowances and result checks
Estimate a preliminary boiler output from floor area, heat loss and hot-water allowance. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsBuilding Sand Calculator: measurements, allowances and result checks
Estimate sand volume, weight and bulk bags from area and depth. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsConduit Fill Calculator: measurements, allowances and result checks
Estimate cable fill percentage inside round electrical conduit. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsCylindrical Tank Calculator: measurements, allowances and result checks
Calculate capacity of a horizontal or vertical cylindrical tank. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsDeck Screw Calculator: measurements, allowances and result checks
Estimate deck screw count from board count, joists and screws per fixing. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsDecorating Labour Quote Calculator: measurements, allowances and result checks
Estimate decorating labour hours and quote from area, coats, productivity and rate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsDrainage Fall Calculator: measurements, allowances and result checks
Calculate drainage fall, gradient and end-level difference. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsElectrical Power Calculator: measurements, allowances and result checks
Calculate single-phase electrical power from voltage, current and power factor. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsEV Charging Time Calculator: measurements, allowances and result checks
Estimate electric vehicle charging time from battery, state of charge and charger power. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsExtractor Fan Calculator: measurements, allowances and result checks
Estimate extraction airflow from room volume and target air changes. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFabrication Cutting List Optimiser: measurements, allowances and result checks
Optimise bar and section cuts across stock lengths with kerf allowance. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFabrication Quote Calculator: measurements, allowances and result checks
Estimate fabrication price from material, labour, consumables, overhead and margin. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFascia and Soffit Calculator: measurements, allowances and result checks
Estimate fascia length and soffit area from eaves dimensions. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFence Post Calculator: measurements, allowances and result checks
Estimate fence posts from run length and post spacing. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFertiliser Calculator: measurements, allowances and result checks
Estimate fertiliser amount from area and application rate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFlat Roof Material Calculator: measurements, allowances and result checks
Estimate deck sheets, membrane and edge length for a flat roof. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFloor Joist Calculator: measurements, allowances and result checks
Estimate joist quantity from room width and joist centres. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsFoundation Calculator: measurements, allowances and result checks
Estimate strip-foundation concrete from trench length, width and depth. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsGenerator Size Calculator: measurements, allowances and result checks
Estimate generator kVA from continuous load, starting allowance and power factor. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsGrass Seed Calculator: measurements, allowances and result checks
Estimate grass seed quantity from lawn area and sowing rate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsGRP Resin Calculator: measurements, allowances and result checks
Estimate resin and catalyst for a GRP flat-roof laminate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsGutter Fall Calculator: measurements, allowances and result checks
Calculate end drop from gutter length and target fall ratio. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsHardcore Calculator: measurements, allowances and result checks
Estimate compacted hardcore volume, loose volume and weight. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsHip Tile Calculator: measurements, allowances and result checks
Estimate hip tiles from total hip length, effective coverage and waste. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsHot Water Recovery Calculator: measurements, allowances and result checks
Estimate energy and heating time for a hot-water cylinder. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsIrrigation Runtime Calculator: measurements, allowances and result checks
Estimate irrigation runtime from target depth and sprinkler application rate. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationskVA Calculator: measurements, allowances and result checks
Convert voltage, current and phase count into apparent power. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsLED Resistor Calculator: measurements, allowances and result checks
Calculate a series resistor and resistor power for an LED circuit. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsMitre Angle Calculator: measurements, allowances and result checks
Calculate equal mitre cuts for a corner or regular polygon. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsOhm’s Law Calculator: measurements, allowances and result checks
Calculate voltage, current, resistance or power from two known electrical values. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsPaint Coverage Calculator: measurements, allowances and result checks
Calculate coated area or paint required from coverage and coat count. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsPainting Labour Calculator: measurements, allowances and result checks
Estimate painting labour hours and cost from area and productivity. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsParallel Resistance Calculator: measurements, allowances and result checks
Calculate equivalent resistance for resistors connected in parallel. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsPipe Volume Calculator: measurements, allowances and result checks
Calculate internal pipe volume from diameter and length. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsPond Volume Calculator: measurements, allowances and result checks
Estimate rectangular pond volume and water weight. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsPump Head Calculator: measurements, allowances and result checks
Estimate total pump head from static lift and friction allowance. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRectangular Tank Calculator: measurements, allowances and result checks
Calculate water tank capacity from internal dimensions. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRetaining Wall Calculator: measurements, allowances and result checks
Estimate retaining-wall blocks from wall and block face dimensions. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRidge Tile Calculator: measurements, allowances and result checks
Estimate ridge tiles from ridge length, tile coverage and waste. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRoof Batten Calculator: measurements, allowances and result checks
Estimate roofing batten rows and total linear metres from slope dimensions and gauge. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRoof Felt and Membrane Calculator: measurements, allowances and result checks
Estimate roofing membrane rolls from roof area, roll size, laps and waste. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRoof Quote Builder: measurements, allowances and result checks
Create a printable roofing quotation with materials, labour, tax and notes. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRoof Shingle Calculator: measurements, allowances and result checks
Estimate roofing squares and shingle packs from roof area. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRoof Slate Calculator: measurements, allowances and result checks
Estimate slate quantity from roof area, slate dimensions, headlap and waste. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRoofing Labour Calculator: measurements, allowances and result checks
Estimate roofing labour days and cost from area, productivity and crew size. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsRoofing Waste Calculator: measurements, allowances and result checks
Add a configurable cutting and breakage allowance to roofing quantities. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSeries Resistance Calculator: measurements, allowances and result checks
Add resistor values connected in series. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSheet Material Optimiser: measurements, allowances and result checks
Estimate sheet quantity and area utilisation from rectangular parts. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSkip Size Estimator: measurements, allowances and result checks
Estimate loose waste volume and a practical skip size from dimensions and bulking. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsStair Calculator: measurements, allowances and result checks
Estimate riser count, riser height and total going from floor-to-floor height. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSteel Beam Weight Calculator: measurements, allowances and result checks
Calculate total structural beam weight from published kilograms per metre. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSteel Pipe Weight Calculator: measurements, allowances and result checks
Calculate steel pipe weight from outside diameter, wall thickness and length. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSteel Plate Weight Calculator: measurements, allowances and result checks
Calculate steel plate weight from width, length, thickness and quantity. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSteel Tube Weight Calculator: measurements, allowances and result checks
Calculate rectangular hollow-section weight from dimensions, wall and length. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsSteel Weight Calculator: measurements, allowances and result checks
Calculate solid steel weight from section dimensions, length, quantity and density. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsStud Wall Calculator: measurements, allowances and result checks
Estimate vertical studs from wall length and stud centres. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsThree Phase Power Calculator: measurements, allowances and result checks
Calculate three-phase power from line voltage, current and power factor. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsTimber Volume Calculator: measurements, allowances and result checks
Calculate timber volume and estimated weight from dimensions and density. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsVoltage Drop Calculator: measurements, allowances and result checks
Estimate conductor voltage drop from current, distance, material and cable area. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsWall Area Calculator: measurements, allowances and result checks
Calculate net paintable wall area after doors and windows. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsWater Flow Rate Calculator: measurements, allowances and result checks
Calculate water flow from collected volume and elapsed time. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsWeld Volume Calculator: measurements, allowances and result checks
Estimate fillet weld metal volume and weight from leg size and weld length. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Trade calculationsWelding Consumable Calculator: measurements, allowances and result checks
Estimate welding consumable requirement from deposited weld metal and efficiency. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & development
Base64 Decoder: valid input, output and implementation checks
Decode Base64 text online into readable data for development, testing and data handling. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentBase64 Encoder: valid input, output and implementation checks
Encode text or data to Base64 online for development, APIs, data transfer and testing. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentBreadcrumb Schema Generator: valid input, output and implementation checks
Create BreadcrumbList JSON-LD from names and URLs. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCanonical Tag Generator: valid input, output and implementation checks
Generate a canonical link tag from a validated absolute URL. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCron Expression Helper: valid input, output and implementation checks
Build a standard five-field cron expression from common schedules. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSS Border Radius Generator: valid input, output and implementation checks
Generate and preview CSS border-radius values. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSS Box Shadow Generator: valid input, output and implementation checks
Build and preview a CSS box-shadow declaration. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSS Formatter: valid input, output and implementation checks
Format CSS rules and declarations for easier reading. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSS Gradient Generator: valid input, output and implementation checks
Create linear-gradient CSS from colours, direction and stop positions. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSV Cleaner: valid input, output and implementation checks
Trim cells, remove empty rows and normalise CSV output. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSV Column Extractor: valid input, output and implementation checks
Select one CSV column by header name and extract its values. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSV to JSON Converter: valid input, output and implementation checks
Convert CSV data to JSON online for APIs, applications, spreadsheets and developer workflows. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentCSV Viewer: valid input, output and implementation checks
Parse CSV data and display it as an accessible table. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentDNS Lookup: valid input, output and implementation checks
Look up DNS records for a domain and review common records such as A, AAAA, MX, CNAME and TXT. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentDuplicate Row Finder: valid input, output and implementation checks
Find duplicate rows in CSV or line-based data. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentEmail Extractor: valid input, output and implementation checks
Extract and deduplicate email addresses found in supplied text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentFAQ Schema Generator: valid input, output and implementation checks
Create FAQPage JSON-LD from questions and answers. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentHMAC Generator: valid input, output and implementation checks
Generate an HMAC-SHA-256 value locally from a message and secret key. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentHreflang Tag Generator: valid input, output and implementation checks
Create reciprocal hreflang link tags for language URLs. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentHTML Entity Decoder: valid input, output and implementation checks
Decode common HTML entities back into readable text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentHTML Entity Encoder: valid input, output and implementation checks
Escape HTML-sensitive characters for safe display as text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentHTML Formatter: valid input, output and implementation checks
Format HTML markup with readable line breaks and indentation. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentHTTP Status Checker: valid input, output and implementation checks
Check HTTP status codes for web URLs and identify responses such as 200, 301, 404 and 500. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentJSON Formatter: valid input, output and implementation checks
Format and beautify JSON online with readable indentation and a clean developer-friendly output. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentJSON Minifier: valid input, output and implementation checks
Validate and minify JSON by removing unnecessary whitespace. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentJSON to CSV Converter: valid input, output and implementation checks
Convert JSON data to CSV online for spreadsheets, reporting, data analysis and simple data exchange. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentJSON to XML Converter: valid input, output and implementation checks
Convert JSON objects and arrays into escaped XML markup. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentJSON Validator: valid input, output and implementation checks
Validate JSON online and quickly identify malformed JSON syntax before using data in an application or API. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentJWT Decoder: valid input, output and implementation checks
Decode JWT headers and payloads locally without verifying or uploading the token. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentKeyword Density Checker: valid input, output and implementation checks
Calculate keyword occurrences and density in supplied text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentLink Rel Generator: valid input, output and implementation checks
Generate safe link markup with sponsored, nofollow or ugc relationship values. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentLocal Business Schema Generator: valid input, output and implementation checks
Create basic LocalBusiness JSON-LD from business details. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentMarkdown to HTML Converter: valid input, output and implementation checks
Convert common Markdown syntax into safe previewable HTML. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentMeta Description Checker: valid input, output and implementation checks
Check description length and preview a search result snippet. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentMeta Tag Generator: valid input, output and implementation checks
Generate SEO meta tags for web pages, including title, description and useful social sharing metadata. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentMeta Title Checker: valid input, output and implementation checks
Check a page title length and preview how it may appear in search results. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentNumber Base Converter: valid input, output and implementation checks
Convert integers between binary, octal, decimal and hexadecimal. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentOpen Graph Generator: valid input, output and implementation checks
Generate Open Graph meta tags for social sharing. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentPassword Generator: valid input, output and implementation checks
Generate strong random passwords online with flexible length and character options. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentProduct Schema Generator: valid input, output and implementation checks
Create product JSON-LD with price, currency and availability. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentQuery String Parser: valid input, output and implementation checks
Parse URL query parameters into readable JSON. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentRedirect Map Generator: valid input, output and implementation checks
Convert old and new URL pairs into a clean redirect mapping CSV. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentRegular Expression Tester: valid input, output and implementation checks
Test a JavaScript-compatible regular expression and inspect every match. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentRobots Meta Directive Builder: valid input, output and implementation checks
Build a robots meta tag from index, follow and preview choices. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentRobots.txt Generator: valid input, output and implementation checks
Generate a robots.txt file for a website with a clean structure for search crawler directives. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentSERP Preview Tool: valid input, output and implementation checks
Preview a title, URL and description as a search result. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentSHA-256 Generator: valid input, output and implementation checks
Generate a SHA-256 digest locally with the browser Web Crypto API. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentSHA-512 Generator: valid input, output and implementation checks
Generate a SHA-512 digest locally with the browser Web Crypto API. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentSitemap Generator: valid input, output and implementation checks
Create an XML sitemap for a website and prepare a clean sitemap structure for search engines. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentSQL Formatter: valid input, output and implementation checks
Format common SQL statements for easier reading and review. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentSSL Checker: valid input, output and implementation checks
Check SSL and TLS certificate information for a website and review key certificate details. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentText Diff Checker: valid input, output and implementation checks
Compare two texts line by line and highlight additions and removals. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentTSV to CSV Converter: valid input, output and implementation checks
Convert tab-separated values into correctly escaped CSV. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentTwitter Card Generator: valid input, output and implementation checks
Generate Twitter/X card metadata for a web page. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentUnit Converter: valid input, output and implementation checks
Convert common measurements online, including length, weight, temperature, area, volume and more. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentUnix Timestamp Converter: valid input, output and implementation checks
Convert Unix timestamps to readable dates and dates back to Unix time. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentURL Decoder: valid input, output and implementation checks
Decode URL-encoded text online and convert percent-encoded characters back into readable text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentURL Encoder: valid input, output and implementation checks
Encode URLs and query text online using percent encoding for safe use in web addresses and requests. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentURL Extractor: valid input, output and implementation checks
Extract, deduplicate and list web URLs found in text. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentURL Parser: valid input, output and implementation checks
Break a URL into protocol, host, port, path, query and fragment components. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentUTM Campaign URL Builder: valid input, output and implementation checks
Build a campaign URL with safely encoded UTM parameters. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentUUID Generator: valid input, output and implementation checks
Generate UUIDs online for applications, databases, APIs, testing and unique identifiers. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentXML Formatter: valid input, output and implementation checks
Format well-formed XML with readable indentation. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentXML to JSON Converter: valid input, output and implementation checks
Convert well-formed XML into structured JSON in your browser. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Web & developmentXML Validator: valid input, output and implementation checks
Check XML syntax and report parser errors clearly. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematics
Calorie Calculator: inputs, method and practical checks
Estimate daily energy needs from age, size, activity and goal using standard formulas. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsCircle Calculator: inputs, method and practical checks
Calculate diameter, circumference and area from a radius. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsCombination Calculator: inputs, method and practical checks
Calculate unordered selections using nCr. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsFinal Grade Calculator: inputs, method and practical checks
Calculate the final-exam score needed to reach a target course grade. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsGPA Calculator: inputs, method and practical checks
Calculate weighted GPA from grades and course credits. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsGrade Calculator: inputs, method and practical checks
Calculate a weighted course grade from scores and weights. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsMacro Calculator: inputs, method and practical checks
Split a calorie target into protein, carbohydrate and fat grams. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsMean Median Mode Calculator: inputs, method and practical checks
Calculate mean, median, mode, range and count from a number set. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsPermutation Calculator: inputs, method and practical checks
Calculate ordered selections using nPr. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsPythagorean Theorem Calculator: inputs, method and practical checks
Find a missing side in a right-angled triangle. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsQuadratic Equation Calculator: inputs, method and practical checks
Solve real or complex roots for ax² + bx + c = 0. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsScientific Notation Converter: inputs, method and practical checks
Convert ordinary numbers to and from scientific notation. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsTDEE Calculator: inputs, method and practical checks
Estimate total daily energy expenditure from BMR and activity level. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsTriangle Calculator: inputs, method and practical checks
Calculate triangle area and perimeter from three sides. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
Hướng dẫn →Learning & mathematicsVariance Calculator: inputs, method and practical checks
Calculate population and sample variance for a list of numbers. This practical guide explains the inputs, method, worked values and checks needed to use the result responsibly.
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