Miles to kilometers (mi to km)
The answer, the exact formula and a table with the values people look up most.
1 mi = 1.60934 km1 km = 0.621371 miKilometers = Miles × 1.609344Example: 20 mi = 32.1869 km
1 mi = 1.609344 km
Conversions people ask for most
Convert miles to kilometers
| mi | km |
|---|---|
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 3 mi | 4.828 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.093 km |
| 13.1 mi | 21.082 km |
| 20 mi | 32.187 km |
| 26.2 mi | 42.165 km |
| 50 mi | 80.467 km |
| 60 mi | 96.561 km |
| 100 mi | 160.93 km |
| 500 mi | 804.67 km |
| 1000 mi | 1609.3 km |
The factor is exact: it comes from the official definition of the units. The table rounds to a few decimals; the converter above gives up to 10 significant digits.
The two units
Mile mi
A mile is 5,280 feet, exactly 1.609344 kilometers; road distances in the US and the UK are signposted in miles.
Kilometer km
A kilometer is 1,000 meters; it is the unit for road distances in almost every country.
Frequently asked questions
How many kilometers are 20 miles?
20 mi = 32.1869 km.
What is the formula to convert miles to kilometers?
Kilometers = Miles × 1.609344. 20 mi = 32.1869 km.
Is this conversion exact?
Yes. The factor comes from the international definition of both units, so the only difference you may see is rounding.