Kilometres to Miles — km to mi
Enter a value to convert kilometres (km) to miles (mi). Works in your browser with no sign-up.
Formula
1 km = 0.6213712 mi
Multiply the number of kilometres by 0.6213712 (or divide by 1.609344). For example, 10 km × 0.6213712 = 6.213712 mi.
Quick Reference — Kilometres to Miles
About Length Units
Most of the world measures distance in metres and kilometres, while the United States uses miles, feet and inches for everyday distances, and the UK still signs its roads in miles. Nautical miles (exactly 1,852 m) are used at sea and in aviation. The inch is defined as exactly 2.54 cm and the foot as exactly 0.3048 m, so these conversions are exact.
Related Conversions
All Length Conversions
FAQ — Kilometres to Miles
How do I convert kilometres to miles?
Multiply the number of kilometres by 0.6213712 (or divide by 1.609344). For example, 10 km × 0.6213712 = 6.213712 mi.
How many miles are in one kilometre?
1 kilometre = 0.6213712 mi (shown to up to 7 significant figures).
Is the conversion exact?
Yes for metric–imperial length: the international inch is exactly 2.54 cm, the foot exactly 0.3048 m and the mile exactly 1,609.344 m. Results are shown to 7 significant figures.
Does this converter work offline?
Yes. Once the page has loaded, conversions run entirely in your browser and nothing is sent to a server.