How many kilometers is 1 mile?
1 mile is exactly 1.609344 kilometers.
Length conversion
Miles to kilometers converter calculator
Last updated:
1 mile equals exactly 1.609344 kilometers. Most calculations use 1.60934 km. The conversion is defined exactly: the international mile was fixed at 1,609.344 meters in 1959.
Featured miles to kilometers converter answer
Miles
1 mi
kilometers converter
1.6093 km
Formula: 1 mile = 1.60934 kilometers. Open the live calculator to convert any value.
Formula
1 mile = 1.60934 kilometers
To convert miles to kilometers, multiply by 1.609344. Like the meter-to-foot factor, this is exact by definition, not by measurement.
Common values
| From | To |
|---|---|
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.0934 km |
| 13.1 mi | 21.0823 km (half-marathon) |
| 15 mi | 24.1402 km |
| 20 mi | 32.1869 km |
| 26.2 mi | 42.1648 km (marathon) |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
Background
The international mile of 5,280 feet (or 1,760 yards) is one of several historical 'mile' definitions. The Roman mile was 5,000 feet; the nautical mile (still used in aviation and shipping) is 1,852 meters and is defined separately from the statute mile.
Common use cases
- Convert US road distances into kilometers for international mapping.
- Translate marathon and route distances into metric equivalents.
- Compare shipping or logistics documentation that mixes miles and kilometers.
Frequently asked questions
How many km is 5 miles?
5 miles is 8.04672 kilometers.
How many km is a half-marathon?
A half-marathon is 13.1094 miles, or 21.0975 kilometers (set by World Athletics).
What's the easiest way to convert miles to kilometers?
Multiply by 1.6 for a quick estimate. For precise work, use 1.609344. Many car odometers and runner apps switch between the two with a single setting.
Are statute miles and nautical miles the same?
No. A statute mile (the standard mile) is 1.609 km. A nautical mile is 1.852 km and is used in aviation, marine navigation, and some military contexts because it equals one minute of arc along a meridian.
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