Unit Converter

Convert between units of length, weight, temperature, volume, area and speed.

100% private — everything runs in your browser

Local processing

From

1
Choose a category: length, weight, temperature, volume, area or speed.
2
Select the From and To units, then type a value.
3
The result appears instantly — press the swap button to convert in the opposite direction.

Input

100 mm → cm

Output

Input

100 °C → °F

Output

Input

1 lb → kg

Output

0.453592

Which categories are supported?

Length, weight, temperature, volume, area and speed — 30+ units in total, both metric and imperial.

How does temperature conversion work?

Temperature uses formulas rather than simple ratios: °F = °C × 9/5 + 32, and K = °C + 273.15.

How precise are the results?

Results are rounded to six decimal places.