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miles to km
Convert miles to kilometers with the exact international mile.
1 mile equals 1.609344 kilometers. This free miles to km converter multiplies miles by that exact factor. Use it for road trips, race distances, and maps that mix US miles with metric signs abroad. The table below repeats the same math as the widget for common mile values. Results stay in your browser with no sign-up.
How to convert miles to km
Multiply miles by 1.609344. In short: kilometers = miles × 1.609344.
Example: 5 mi × 1.609344 = 8.04672 km. So 5 miles is 8.0467 kilometers.
Use the converter above for any value. Use the chart below when you need a common number fast.
miles to km conversion chart
Common mile values converted to kilometers, rounded to four decimal places.
| Miles (mi) | Kilometers (km) |
|---|---|
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 3 mi | 4.8280 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.0934 km |
| 20 mi | 32.1869 km |
| 25 mi | 40.2336 km |
| 50 mi | 80.4672 km |
| 75 mi | 120.7008 km |
| 100 mi | 160.9344 km |
Scan the chart for quick checks. Use the converter above when your number is not listed.
Common miles to km conversions
1 mile is 1.6093 km. 5 miles is 8.0467 km.
10 miles is 16.0934 km. 26.2 miles (a marathon) is 42.1648 km.
50 miles is 80.4672 km. 100 miles is 160.9344 km.
US drivers often convert planned mile routes when a rental car or map shows only kilometers.
When miles and kilometers meet
US road signs use miles per hour and mile markers. Most other countries mark distance in kilometers.
Travelers, race planners, and logistics teams convert miles to km so both sides share one distance. The exact 1.609344 factor keeps long routes from drifting.
Apps sometimes switch units by region. A dedicated miles to km page makes the factor visible and checkable.
More free converters
Need the reverse tool? Open km to miles. For the full set, visit the length converter hub. Related: km to miles and meters to feet.
The international mile is defined from the meter. See NIST - SI units for length for SI length context.