Convert miles to kilometers
Converting miles to kilometers is a common length task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 mi equals 1.60934 km, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert miles to kilometers
To convert miles to kilometers, multiply the number of miles by 1.60934. For example, 10 mi × 1.60934 = 16.0934 km.
km = mi × 1.60934
- Write down the value in miles you want to convert.
- Multiply it by 1.60934 (the exact mi→km factor).
- The result is your value in kilometers. Check it below with the converter or the table.
Conversion table
Common values of miles and their equivalents in kilometers:
| mi | km |
|---|---|
| 1 | 1.60934 |
| 2 | 3.21869 |
| 3 | 4.82803 |
| 4 | 6.43738 |
| 5 | 8.04672 |
| 10 | 16.0934 |
| 20 | 32.1869 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.934 |
| 250 | 402.336 |
| 500 | 804.672 |
About these units
Mile (mi). The international mile is defined as exactly 1,609.344 meters, or 5,280 feet. It is the standard road distance unit in the United States and the United Kingdom.
Kilometer (km). A kilometer equals 1,000 meters and is the standard metric unit for road distances and geography. One kilometer is about 0.62 miles or a 12-minute walk.
Frequently asked questions
How do I convert miles to kilometers?
To convert miles to kilometers, multiply the number of miles by 1.60934. For example, 10 mi × 1.60934 = 16.0934 km. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many kilometers are in 1 mile?
1 mi = 1.60934 km. That is the fixed relationship used by this converter and by international standards.
How many miles are in 1 kilometer?
1 km = 0.621371 mi. If you are converting in the opposite direction, use our Kilometer to Mile converter for the dedicated table and FAQ.
Is the miles to kilometers conversion exact?
Yes. Both units are defined by international agreement, so the factor of 1.60934 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is mile used for?
The international mile is defined as exactly 1,609.344 meters, or 5,280 feet. It is the standard road distance unit in the United States and the United Kingdom.