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Convert kilometers (km) to miles (mi) instantly. Chart, running races, formula, and reverse direction.
A kilometer (km) is 1,000 meters; a mile (mi) is exactly 1.609344 km. To convert km to mi, multiply by 0.621371; to convert mi to km, multiply by 1.609344.
1 km equals 0.6214 mi.
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 km | 0.6214 mi |
| 2 km | 1.243 mi |
| 3 km | 1.864 mi |
| 5 km | 3.107 mi |
| 8 km | 4.971 mi |
| 10 km | 6.214 mi |
| 15 km | 9.321 mi |
| 20 km | 12.427 mi |
| 21.0975 km | 13.109 mi |
| 25 km | 15.534 mi |
| 30 km | 18.641 mi |
| 42.195 km | 26.219 mi |
| 50 km | 31.069 mi |
| 75 km | 46.603 mi |
| 100 km | 62.137 mi |
| 150 km | 93.206 mi |
| 200 km | 124.27 mi |
| 250 km | 155.34 mi |
| 500 km | 310.69 mi |
| 1000 km | 621.37 mi |
Chart values use the exact factor 1 km = 0.621371 mi, rounded for display.
Formula
mi = km × 0.621371 | km = mi × 1.609344km = kilometer — SI unit of distance (1 km = 1,000 m)
mi = statute mile — US/UK land mile (1 mi = 1.609344 km, exact)
Worked Example
Convert 100 km to miles
Did you know? The metric system was first proposed during the French Revolution in the 1790s. France made it mandatory in 1799, and today nearly every country except the US uses kilometers for road distances and speed limits.
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