general
Unit Converter
A fast, accurate unit converter covering length, weight, temperature, area, volume, speed and data size. No signup required.
Kilometer (km)
0.001
How to use the unit converter
Select a category (length, weight, temperature, etc.), choose your source and target units, enter a value and the result updates instantly. All calculations happen in your browser — no data is sent to any server.
Supported unit categories
Length (mm to miles), weight (mg to tonnes), temperature (°C, °F, K), volume (ml to gallons), area (mm² to sq miles), speed (m/s to Mach), and digital data sizes (bits to terabytes).