KM to Miles Formula
Exact conversion factor
Miles = Kilometers ÷ 1.609344 Example: 10 km ÷ 1.609344 = 6.2137 mi An international statute mile is defined as exactly 1,609.344 meters. Dividing your kilometer distance by 1.609344 provides an exact output without regional variations.
Common reference points
| Kilometers | Miles |
|---|---|
| 1 km | 0.6214 mi |
| 5 km (5K) | 3.1069 mi |
| 10 km (10K) | 6.2137 mi |
| 21.1 km (Half Marathon) | 13.1095 mi |
| 42.2 km (Marathon) | 26.2188 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
| 500 km | 310.6856 mi |
Frequently asked questions
How many miles is 10 km?
10 kilometers equals approximately 6.21 miles.
How many km is a mile?
There are exactly 1.609344 kilometers in 1 international statute mile.
How many miles is a marathon?
An official marathon course measures 42.195 kilometers, which equals approximately 26.219 miles.