Kilometers (km) to Miles (mi) Converter
Enter a value to instantly convert between length units.
1 Kilometer = 0.6214 Mile
Key Formulas
Centimeter → Inch
in = cm × 0.393701Kilometer → Mile
mi = km × 0.621371Foot → Meter
m = ft × 0.3048Inch → Centimeter
cm = in × 2.54Formula
mi = km × (1000 / 1609.344)Converting kilometers to miles multiplies by 1000 / 1609.344, about 0.6214 miles per kilometer. This converter uses the international statute mile of 1609.344 m, which equals 5,280 international feet. Drivers, runners, and travelers use it for road signs, race distances, and speed limits: 5 km is about 3.11 mi, and 10 km is about 6.21 mi. The kilo- prefix means one thousand, as the BIPM SI prefix table shows. The older US survey mile is a separate unit, and the NIST revised definitions cover the difference.
Source: NIST named international length definitions (definition-derived arithmetic)
Reviewed by the Convert Calc editorial team · Last reviewed: · see our methodology
Frequently Asked Questions
Real-World Examples
Marathon distance in miles for a US race entry.
42.195 km = 26.21875746 mi
A 10K charity run described to a US friend in miles.
10 km = 6.213711922 mi
A 100 km road trip in a US rental car with a miles odometer.
100 km = 62.13711922 mi
One kilometer on a US treadmill that reads miles.
1 km = 0.6213711922 mi