Miles to Kilometers: mi to km Conversion
The international mile is defined as exactly 1.609344 kilometers. Multiply a distance in miles by this factor to express it in kilometers. The factor is exact; the precision of the distance you measured may not be.
Worked example · Updated
Calculate five miles
Multiply 5 by 1.609344 to get 8.04672 km. For a route-planning estimate you might round to 8.05 km, but keep the unrounded value if it will feed into another calculation.
A fast inverse check is to divide the kilometer result by 1.609344. The answer returns to 5 miles, subject only to the displayed rounding.
Choose the mile you mean
This page uses the international statute mile, not a nautical mile. A nautical mile is longer and is used for navigation and aviation contexts. Check the unit label before comparing two distances.
Area and volume use squared or cubed factors. Multiplying a square-mile value by the length factor once will not convert it to square kilometers.
Convert your own distance
The linked unit converter opens at 5 miles to kilometers. Change the amount or select another unit pair, then press Convert to reveal the result.
A conversion changes the unit, not the uncertainty of the original measurement or the distance along a particular route.
| Miles | Kilometers |
|---|---|
| 1 | 1.609344 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 100 | 160.9344 |
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