Length conversion
Convert Miles to Kilometers
1 mile equals 1.609 kilometers. To convert miles to kilometers, multiply the number of miles by 1.609344.
Miles to kilometers is the conversion for road trips abroad, running races, car specs, and foreign speed limits. Enter any mile value and the kilometers appear instantly, with the exact factor shown so you can reuse it for any distance.
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Computed at full precision in your browser; the result is rounded for display.
How to convert miles to kilometers
Formula
kilometers = miles × 1.609344 miles = kilometers ÷ 1.609344One statute mile is defined as exactly 1.609344 kilometers (1,609.344 meters), so this conversion is exact. Don't confuse it with the nautical mile, which is 1.852 km.
| Miles | Kilometers |
|---|---|
| 1 mi | 1.609 km |
| 2 mi | 3.219 km |
| 3.1 mi | 4.989 km 5K race |
| 5 mi | 8.047 km |
| 6.2 mi | 9.978 km 10K race |
| 10 mi | 16.09 km |
| 13.1 mi | 21.08 km half marathon |
| 26.2 mi | 42.16 km marathon |
| 50 mi | 80.47 km |
| 100 mi | 160.93 km |
Worked example
Planning a 250-mile road trip in a country that posts distances in kilometers? Multiply 250 × 1.609344 to get about 402 km. For runners, a 13.1-mile half marathon is 21.1 km and a full 26.2-mile marathon is 42.2 km — the classic metric race distances.
Shortcut. Quick estimate: multiply miles by 1.6, or use the runner's trick of × 8 ÷ 5. A 5-mile run is about 8 km (5 × 8 ÷ 5).
Good to know
Miles-to-kilometers is a clean single multiplier. The one ambiguity is which mile: this page uses the statute (land) mile of 1.609 km, not the nautical mile (1.852 km) used in aviation and at sea. Going the other way, multiply kilometers by 0.6214 to get miles — useful for reading foreign odometers and road signs.
Frequently asked questions
How many km is 1 mile?
One mile is 1.609 kilometers. Multiply any mileage by 1.609344 to convert to kilometers.
What is 5 miles in km?
5 miles equals about 8.05 kilometers. 10 miles is 16.1 km and 26.2 miles (a marathon) is 42.2 km.
How do I convert miles to km in my head?
Multiply by 1.6, or for running distances use miles × 8 ÷ 5. A 10-mile run is roughly 16 km.
Is a mile the same as a nautical mile?
No. A statute (land) mile is 1.609 km, while a nautical mile used in aviation and shipping is 1.852 km — about 15% longer.
How many miles is 5 km?
5 km is about 3.1 miles, which is why a 5K race is just over three miles. 10 km is 6.2 miles.