One mile is exactly 1.609344 kilometers. Multiply miles by 1.609344, or about 1.609, to get kilometers; 10 miles is about 16.09 km. Runners, cyclists, drivers and hikers use this direction when a route, race or road sign is in miles and they think in kilometers, or when a training app needs metric input. The mile has been defined as exactly 1,609.344 meters since 1959, so the factor never changes.
Formula
Miles to Kilometers conversion table
| Miles | Kilometers |
|---|---|
| 0.25 mi | 0.402336 km |
| 0.5 mi | 0.804672 km |
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 3 mi | 4.828 km |
| 4 mi | 6.4374 km |
| 5 mi | 8.0467 km |
| 6 mi | 9.6561 km |
| 7 mi | 11.2654 km |
| 8 mi | 12.8748 km |
| 9 mi | 14.4841 km |
| 10 mi | 16.0934 km |
| 15 mi | 24.1402 km |
| 20 mi | 32.1869 km |
| 25 mi | 40.2336 km |
| 30 mi | 48.2803 km |
| 40 mi | 64.3738 km |
| 50 mi | 80.4672 km |
| 60 mi | 96.5606 km |
| 70 mi | 112.6541 km |
| 75 mi | 120.7008 km |
| 80 mi | 128.7475 km |
| 90 mi | 144.841 km |
| 100 mi | 160.9344 km |
| 250 mi | 402.336 km |
| 500 mi | 804.672 km |
| 1,000 mi | 1,609.34 km |
Where you’ll use it
Road signs and speed limits in the US and UK are in miles, as are many trail guides. Visitors from metric countries convert them to kilometers to judge travel time and distance. Runners meet it in race names: a 26.2-mile marathon is about 42.16 km, close to the official 42.195 km. Property descriptions occasionally use miles too, for example frontage on a long rural road or the distance from a town.
Tip: Neighboring Fibonacci numbers give a quick estimate: 5 miles is about 8 km, 8 miles about 13 km. For precise distances use 1.609344 and round only the final answer.