Miles to Kilometers Converter
1 mile (mi) = exactly 1.60934 km. A 26.2-mile marathon equals 42.195 km. 1 mile drive = 1.609 km.
Inverse conversion
1 kilometer (km) = 0.621371 miles. A 5 km run = 3.107 miles. A marathon (42.195 km) = 26.22 miles.
Formula
Formula
km = mi × 1.60934
Worked example
To convert 26.219 miles (marathon) to km, multiply 26.219 × 1.60934. Result: 42.195 km.
Quick reference table
| mi | km |
|---|---|
| 1 | 1.609344 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.9344 |
| 250 | 402.336 |
| 500 | 804.672 |
Unit definitions
Mile (mi)
The mile (mi) is an imperial unit equal to exactly 1,609.344 m. Used for road distances in the US, UK, and a few other countries.
Kilometer (km)
The kilometer (km) equals 1,000 meters. The standard road distance unit in most of the world.
Common use cases
- Converting US speed limits or distances for international travelers
- Running races: converting mile pace to km pace
- Navigation and mapping
- UK motorway distances in miles to metric equivalents