How to convert kilometers to miles
One kilometer equals 0.621371 miles. To convert, multiply the number of kilometers by 0.621371 (or divide by 1.609344):
Mental-math shortcut: Multiply by 5 and divide by 8 (or multiply by 0.6): 10 km ≈ 6.2 miles.
Example
Convert 5 kilometers to miles: 5 km × 0.621371 = 3.1069 mi.
Kilometers to Miles conversion chart
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 | 0.621371 |
| 2 | 1.2427 |
| 3 | 1.8641 |
| 5 | 3.1069 |
| 8 | 4.971 |
| 10 | 6.2137 |
| 15 | 9.3206 |
| 20 | 12.4274 |
| 21.0975 (half marathon) | 13.1094 |
| 25 | 15.5343 |
| 30 | 18.6411 |
| 42.195 (marathon) | 26.2188 |
| 50 | 31.0686 |
| 100 | 62.1371 |
What is a kilometer?
A kilometer (km) is 1,000 meters. It is the standard unit for road distances and running races in most countries — a 5K race is 5 kilometers, a half marathon 21.0975 km and a marathon 42.195 km. One kilometer is about 0.62 miles.
What is a mile?
A mile (mi) is 5,280 feet, or exactly 1,609.344 meters. It is the standard unit for road distances and speed limits in the United States and the United Kingdom. A marathon is 26.2 miles long.
Converting the other way? Use the Miles to Kilometers converter.
Frequently asked questions
How many miles is one kilometer?
One kilometer is 0.621371 miles.
How do I convert kilometers to miles?
Multiply the value in kilometers by 0.621371. For example, 5 km × 0.621371 = 3.1069 mi.
What is 10 km in miles?
10 km is 6.2137 miles.
How do I convert miles to kilometers?
Multiply miles by 1.609344 (or divide by 0.621371). You can also use our Miles to Kilometers converter.
How many miles is a 5K?
A 5K race is 5 kilometers, which is about 3.11 miles. A 10K is about 6.21 miles.
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
Last updated: