Unit converter
Length, mass, temperature, speed…
All units
This unit converter switches between systems for length, mass, temperature, speed, area, volume, computer data and durations. Handy for cooking, DIY, travel or homework, it shows the result as soon as you type a value.
Everything is computed in your browser: no data is sent, no tracking, no ads.
FAQ
Is my data sent to a server?
No, all conversions run locally in your browser.
Which unit categories are supported?
Length, mass, temperature, speed, area, volume, computer data and time.
Does temperature conversion handle Celsius and Fahrenheit?
Yes, you can convert between Celsius, Fahrenheit and Kelvin.
Does the tool work offline?
Yes, once the page is loaded everything works without a connection.