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Free Unit and File Converters
Convert lengths, areas, temperatures, volumes, weights, speeds and power, or choose a supported file conversion. Dedicated unit pages help you select the right measurement and avoid mixing incompatible units.
Universal File Converter
Convert only supported browser-side image and text formats; unsupported paths are clearly disabled.
Open toolUnit Converter
Convert length, area, temperature, volume and mass with verified conversion factors.
Open toolLength Converter
Convert millimetres, centimetres, metres, kilometres, inches, feet, yards and miles.
Open toolArea Converter
Convert metric and imperial area units including acres and hectares.
Open toolTemperature Converter
Convert Celsius, Fahrenheit and Kelvin with correct offset formulas.
Open toolVolume Converter
Convert metric volume and common US liquid measures.
Open toolWeight Converter
Convert mass and weight units from milligrams to tonnes, pounds and stone.
Open toolPower Converter
Convert watts, kilowatts, megawatts and mechanical horsepower.
Open toolSpeed Converter
Convert metres per second, kilometres per hour, miles per hour, knots and feet per second.
Open tool