Kilometers to miles
1 kilometer = 0.621371 miles
Type a value in kilometers (km) to get miles (mi) straight away. A kilometer is smaller than a mile, so the number goes down. Both units belong to length, measured here against the meter.
1 km = 0.62137119 mi
Formula
mi = km × 0.62137119
One kilometer is 0.62137119 miles, so multiply by that factor. You can also divide by 1.60934, the number of kilometers in one mile. Here km is the value in kilometers and mi is the result in miles.
Worked example: 42.195 kilometers × 0.62137119 = 26.2188 miles.
Kilometers to miles table
| kilometers (km) | miles (mi) |
|---|---|
| 1 km | 0.621371 mi |
| 2 km | 1.24274 mi |
| 3 km | 1.86411 mi |
| 4 km | 2.48548 mi |
| 5 km | 3.10686 mi |
| 6 km | 3.72823 mi |
| 7 km | 4.3496 mi |
| 8 km | 4.97097 mi |
| 9 km | 5.59234 mi |
| 10 km | 6.21371 mi |
| 15 km | 9.32057 mi |
| 20 km | 12.4274 mi |
| 25 km | 15.5343 mi |
| 30 km | 18.6411 mi |
| 40 km | 24.8548 mi |
| 50 km | 31.0686 mi |
| 60 km | 37.2823 mi |
| 75 km | 46.6028 mi |
| 100 km | 62.1371 mi |
Everyday kilometers in miles
| What it is | km | mi |
|---|---|---|
| a 10–12 minute walk | 1 km | 0.621371 mi |
| a 5K run | 5 km | 3.10686 mi |
| a 10K run | 10 km | 6.21371 mi |
| a half marathon | 21.0975 km | 13.1094 mi |
| a marathon | 42.195 km | 26.2188 mi |
Quick estimate in your head
Multiply by about 0.62. For 42.195 km that gives 26.16 mi against an exact 26.2188 mi, an error of 0.2%.
About the units
Kilometer (km). 1,000 meters. Used for road distances and running races outside the US and UK.
Mile (mi). The statute mile: 5,280 feet or exactly 1,609.344 m. Used for road distances in the US and UK.
Going the other way, 1 mile is 1.60934 kilometers.
Questions
How many miles are in 1 kilometer?
1 kilometer is 0.621371 miles, and 1 mile is 1.60934 kilometers.
How do I convert kilometers to miles?
Use mi = km × 0.62137119. For example, 42.195 kilometers × 0.62137119 = 26.2188 miles.
Is the kilometer to mile factor exact?
Yes, the definitions are exact, so the factor is exact. Results here are rounded to 6 significant digits for display.
How much is a marathon in miles?
42.195 km is 26.2188 mi.
Source for the conversion factor: NIST SP 811, Appendix B (conversion factors).
Related conversions
- miles to kilometers
- kilometers to meters
- miles to feet
- feet to miles
- kilometers to nautical miles
- nautical miles to miles