How to convert miles to kilometers
- Type the value you want to convert.
- The result appears instantly. Use Swap units to reverse the direction.
- Choose other units from the lists if you need a different conversion.
Formula
km = mi × 1.6093 and mi = km × 0.6214.
Examples
10 mi = 16.0934 km. 26.2 mi = 42.1648 km. 100 mi = 160.9344 km.
Quick reference table
| mi | km |
|---|---|
| 1 mi | 1.6093 km |
| 3.1 mi | 4.989 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.0934 km |
| 13.1 mi | 21.0824 km |
| 26.2 mi | 42.1648 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
| 250 mi | 402.336 km |
| 500 mi | 804.672 km |
And the other way: km to mi
| km | mi |
|---|---|
| 1 km | 0.6214 mi |
| 5 km | 3.1069 mi |
| 10 km | 6.2137 mi |
| 25 km | 15.5343 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
When you need this conversion
Driving distances, speed limits and race distances in the USA and UK are given in miles. Converting to kilometers helps when you compare routes, fuel use or events from different countries.
Frequently asked questions
How many km is 1 mi?
1 mi equals 1.6093 km. In the other direction, 1 km equals 0.6214 mi.
How many kilometers is a marathon in miles?
A marathon is 26.2188 miles, which is 42.195 kilometers.
What is the formula to convert miles to kilometers?
Multiply the number of mi by 1.6093 to get km. To go back, multiply km by 0.6214.
Is this converter free and private?
Yes. It is free, needs no sign-up and runs in your browser, so the numbers you enter are not sent anywhere.
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Last updated: November 6, 2026