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Search the complete Sellible catalogue by task, file format, calculation or trade. Every published page contains an operational tool and links to closely related tasks.
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Acres to Hectares Converter
Convert acres to hectares instantly with a precise browser-based area converter.
Unit ConvertersAcres to Square feet Converter
Convert acres to square feet instantly with a precise browser-based area converter.
Unit ConvertersAcres to Square metres Converter
Convert acres to square metres instantly with a precise browser-based area converter.
Unit ConvertersAcres to Square yards Converter
Convert acres to square yards instantly with a precise browser-based area converter.
CalculatorsAge Calculator
Calculate age in years, months and days from a date of birth.
Business ToolsAgency Rate Calculator
Estimate a sustainable client rate from staff cost, overhead and target margin.
Heating ToolsAir Change Calculator
Calculate air changes per hour from room volume and airflow.
CalculatorsArea Calculator
Calculate rectangle, triangle or circle area.
Design ToolsAspect Ratio Calculator
Scale width or height while preserving an aspect ratio.
CalculatorsAverage Calculator
Calculate mean, median, minimum, maximum and total from a list of numbers.
Unit ConvertersBar to Kilopascals Converter
Convert bar to kilopascals instantly with a precise browser-based pressure converter.
Unit ConvertersBar to Pascals Converter
Convert bar to pascals instantly with a precise browser-based pressure converter.
Unit ConvertersBar to Pounds per square inch Converter
Convert bar to pounds per square inch instantly with a precise browser-based pressure converter.
Unit ConvertersBar to Standard atmospheres Converter
Convert bar to standard atmospheres instantly with a precise browser-based pressure converter.
Developer ToolsBase64 Decoder
Decode Base64 text online into readable data for development, testing and data handling.
Developer ToolsBase64 Encoder
Encode text or data to Base64 online for development, APIs, data transfer and testing.
Electrical ToolsBattery Runtime Calculator
Estimate battery runtime from capacity, voltage, load and usable capacity.
Fabrication ToolsBend Allowance Calculator
Calculate sheet-metal bend allowance from angle, radius, thickness and K-factor.
Text ToolsBinary to Text Converter
Convert space-separated binary bytes back into UTF-8 text.
CalculatorsBMI Calculator
Calculate body mass index from metric height and weight.
CalculatorsBMR Calculator
Estimate basal metabolic rate using the Mifflin-St Jeor equation.
Carpentry ToolsBoard Cutting Optimiser
Optimise linear timber cuts across stock lengths using a practical first-fit plan.
Carpentry ToolsBoard Foot Calculator
Calculate North American board feet from thickness, width, length and quantity.
Heating ToolsBoiler Size Calculator
Estimate a preliminary boiler output from floor area, heat loss and hot-water allowance.