km to Miles Converter
Conversion formula
1 km = 0.621371 mi
Road distances and race lengths use kilometers in most countries, while road signs in the US and UK use miles. Runners convert all the time: race distances are set in kilometers, but many training plans and watches in the US report miles.
Try your own numbers
km
miles
12.4274 mi
Full calculators:Length Converter
How to convert kilometers to miles
- 1
1 kilometer = 0.621371 miles, so multiply by 0.621371.
- 2
Example: 20 × 0.621371 = 12.4274 mi.
km to Miles conversion chart
| km | Miles |
|---|---|
| 1 km | 0.62137 mi |
| 3 km | 1.8641 mi |
| 5 km | 3.1069 mi |
| 10 km | 6.2137 mi |
| 15 km | 9.3206 mi |
| 20 km | 12.4274 mi |
| 21.1 km | 13.1109 mi |
| 25 km | 15.5343 mi |
| 42.2 km | 26.2219 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
Related conversions
Frequently asked questions
How do I convert kilometers to miles?
1 kilometer = 0.621371 miles, so multiply by 0.621371. For example, 20 km = 12.4274 mi.
How many miles are in one kilometer?
One kilometer equals 0.621371 miles.
Is this length conversion exact?
Yes. Since 1959 the inch has been defined as exactly 2.54 cm and the foot as exactly 0.3048 m, so imperial and metric lengths convert with exact factors. Results here are rounded only for display.