Unit Converter

Pick a measurement category first — length, weight, area, volume, speed, digital storage, time or temperature. The unit lists then refill with only the units that belong to that category, which keeps the choices short and avoids nonsensical conversions. Enter your value on the left and the converted figure appears immediately on the right.

Use the swap control to reverse the two units without retyping anything, which is handy when you are converting back and forth while checking a spec sheet or a recipe. Temperature is handled with proper offset formulas rather than simple multiplication, so Celsius, Fahrenheit and Kelvin all convert correctly. Results are calculated locally in your browser and update the moment you change any field.