Unit Converter
Length, mass, temperature and more. Free, no sign-up.
From
To
1 kilometre in every unit
- Millimetre
- 1,000,000
- Centimetre
- 100,000
- Metre
- 1,000
- Inch
- 39,370.0787402
- Foot
- 3,280.83989501
- Yard
- 1,093.61329834
- Mile
- 0.6213711922
- Nautical mile
- 0.5399568035
Questions
Which units can I convert?
Length, mass, temperature, area, volume, speed, time and digital data (bits and bytes up to gigabytes), in both metric and imperial units.
Why can't temperature be converted with a single factor?
Celsius, Fahrenheit and Kelvin start from different zero points, so you have to add or subtract as well as multiply. For example, °F = °C × 9/5 + 32, and K = °C + 273.15.