Convert Kilometers to Miles
Type any distance in kilometers and get the exact mile equivalent. Useful for marathon training plans, road trip distances and reading maps that mix metric and imperial.
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1 km = 0.62137 mi
Quick reference
| Kilometers | Miles |
|---|---|
| 1 | 0.621 mi |
| 5 | 3.107 mi |
| 10 | 6.214 mi |
| 21.0975 | 13.109 mi (half marathon) |
| 42.195 | 26.219 mi (marathon) |
| 100 | 62.137 mi |
Formula
miles = kilometers × 0.621371
Frequently asked questions
- How many miles is 5 km?
- 5 km equals about 3.107 miles — the classic 5K race distance many people walk or run in roughly 30–45 minutes.
- Why isn't 1 km exactly half a mile?
- A mile is defined as 1.609344 km, so one km is closer to 0.62 mi, not 0.5 mi. The rule of thumb 'km × 0.6' is convenient but loses accuracy past 10 km.