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Unit Converter
Convert length, weight, volume and temperature between metric and imperial units.
Enter a value to convert it.
Formula
Converted value = input × conversion factor between the two units
How to calculate
- 1Find the conversion factor from your source unit to the target unit.
- 2Multiply the input value by that factor.
- 3Round only at the end to avoid compounding rounding errors.
- 4Sanity-check the result — a metre should always be about 3.3 feet.
How to use this calculator
- 1Pick a measurement category — length, weight, temperature, volume and more.
- 2Choose the unit you have and the unit you want.
- 3Type the value — the conversion updates as you type.
- 4Swap the units with one click to reverse the conversion.
Examples
Length
10 miles = 16.09 km — handy for race distances and road signs abroad.
Temperature
350 °F = 176.7 °C — the classic baking conversion: (°F − 32) × 5 ÷ 9.
Common questions
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