Unit Converter
Convert length, mass, volume, area, speed, data, time and temperature units instantly.
Runs in your browser — files never leave your device
1 m =
0.001 km
How it works
Choose a category, pick units, and enter a value to convert instantly.
Temperature uses exact C/F/K formulas; other units use precise factors.
Frequently asked questions
- Which categories are supported?
- Length, mass, volume, area, speed, data, time and temperature.
- Is anything uploaded?
- No — conversions run in your browser.