Unit Converter
Length, mass, temperature, data and more.
Ctrl+Enter runs. Ctrl+Shift+Backspace clears.
Export and import are available after you sign in. Sign in
Converts length, mass, area, volume, speed, temperature, pressure, energy, time and data size with exact factors.
About this tool
Convert kilometres to miles, kilograms to pounds, Celsius to Fahrenheit or megabytes to gigabytes. Pick the quantity, the units and type the value; the result uses exact conversion factors.
How to use it
- 01
Choose the quantity, for example length or temperature.
- 02
Pick the unit to convert from and the unit to convert to.
- 03
Type the value and read the result.
Frequently asked questions
Which units are supported?
Length, mass, area, volume, speed, temperature, pressure, energy, time and data size, in metric and imperial units.
How accurate are the results?
The converter uses exact factors and shows up to eight significant decimals.