Seldons
miles to km
1 mile = 1.60934 kilometers.
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How do you convert miles to kilometers?
Use this formula. It is exact — these units are defined by international agreement, not measured.
km = mi × 1.609344
Example: 10 mi × 1.609344 = 16.0934 km.
miles to km conversion table
Common values, rounded to six significant figures.
| mi | km |
|---|---|
| 1 mi | 1.60934 km |
| 2 mi | 3.21869 km |
| 3 mi | 4.82803 km |
| 5 mi | 8.04672 km |
| 10 mi | 16.0934 km |
| 13.1 mi | 21.0824 km |
| 15 mi | 24.1402 km |
| 20 mi | 32.1869 km |
| 26.2 mi | 42.1648 km |
| 30 mi | 48.2803 km |
| 50 mi | 80.4672 km |
| 60 mi | 96.5606 km |
| 75 mi | 120.701 km |
| 100 mi | 160.934 km |
| 200 mi | 321.869 km |
| 500 mi | 804.672 km |
Road signs in the United States and the United Kingdom are in miles while the rest of Europe is in kilometers, so this is the conversion that rental cars, running apps and freight quotes all need. A mile is exactly 1,609.344 m, so a marathon's 26.2 miles is 42.195 km — the familiar figure comes from the metric side.
Values worth remembering
These come up often enough that knowing them saves a lookup.
- 26.2 mi = 42.1648 kma marathon
- 3.1 mi = 4.98897 kma 5K race
- 1 mi = 1.60934 kmone mile
Questions people ask
How many kilometers is 1 mile?
1 mile is 1.60934 kilometers.
How many miles is 1 kilometer?
1 kilometer is 0.621371 miles.
How do you convert miles to kilometers in your head?
Use × 1.6. That lands within a percent or so of the exact figure, which is close enough for packing, shipping estimates and shopping — use the calculator when the number has to be right.
Is the mile to kilometer conversion exact?
Yes. The relationship is exact by international agreement, so 1.609344 is a definition rather than a measurement. Rounding in the answer comes from display, not from the conversion.