How to convert miles to kilometers
- Take the value in miles.
- Use the formula kilometers = miles × 1.609344.
- For example, 26.2 mi is 42.16 km.
About miles and kilometers
Multiply miles by 1.609344 to get kilometers. The factor is exact because the international mile is defined as 1,609.344 meters (5,280 feet of 0.3048 m each).
The US and UK give road distances and speed limits in miles, so trip plans, car specs and running apps from those countries often need converting for everyone else.
Examples
- 26.2 mi (a marathon) is 42.16 km
- 13.1 mi (a half marathon) is 21.08 km
- 1 mi (the mile race in athletics) is 1.61 km
- 3.1 mi (a 5K race) is 4.99 km
Miles to kilometers chart
| Miles (mi) | Kilometers (km) |
|---|---|
| 1 | 1.61 |
| 2 | 3.22 |
| 3 | 4.83 |
| 4 | 6.44 |
| 5 | 8.05 |
| 6 | 9.66 |
| 7 | 11.27 |
| 8 | 12.87 |
| 9 | 14.48 |
| 10 | 16.09 |
| 15 | 24.14 |
| 20 | 32.19 |
| 21.1 | 33.96 |
| 25 | 40.23 |
| Miles (mi) | Kilometers (km) |
|---|---|
| 26.2 | 42.16 |
| 30 | 48.28 |
| 40 | 64.37 |
| 42.2 | 67.91 |
| 50 | 80.47 |
| 60 | 96.56 |
| 70 | 112.65 |
| 80 | 128.75 |
| 90 | 144.84 |
| 100 | 160.93 |
| 150 | 241.4 |
| 200 | 321.87 |
| 500 | 804.67 |