How many kilometers are in one mile?
One mile is 1.609 km.
Miles to Kilometers
Type a value to convert it from miles to kilometers. One mi equals 1.609 km.
Result
Miles and kilometers, side by side
One mile is 1.609 km. In the other direction, one kilometer is 0.6214 mi.
The factor is exact rather than rounded: imperial and US units have been defined from the metric ones since 1959, so the conversion introduces no error of its own. What you see below is arithmetic, not an approximation.
The mile is 5,280 feet, exactly 1,609.344 meters. It remains the unit for road distances and speed limits in the United States and the United Kingdom. The nautical mile used at sea and in the air is a different unit: 1,852 meters.
The kilometer is a thousand meters, the unit for road distances and running races almost everywhere except the United States and the United Kingdom, where road signs use miles. A marathon is 42.195 km.
| Mile | Kilometer |
|---|---|
| 1 | 1.60934 |
| 5 | 8.04672 |
| 10 | 16.0934 |
| 20 | 32.1869 |
| 50 | 80.4672 |
| 100 | 160.934 |
Frequently asked questions
How do I convert kilometers back to miles?
One kilometer is 0.6214 mi. The tool above converts in both directions.
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