Convert miles to kilometers
Enter a value in miles to convert it to kilometers.
miles to kilometers reference
| miles | kilometers |
|---|---|
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 5 mi | 8.0467 km |
| 10 mi | 16.0934 km |
| 25 mi | 40.2336 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
The conversion factor
One mile is 1.609344 kilometers. So to convert, multiply your figure in miles by 1.609344. To go the other way, multiply kilometers by 0.62137119, or use the kilometers to miles converter.
Doing it in your head
For a quick estimate, round the factor: roughly "times 2". Use the exact converter above when the number matters.
Where this conversion comes up
Height, distance, DIY measurements, maps, and any spec sheet that mixes metric and imperial.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many kilometers are in a mile?
1 mile = 1.609344 kilometers.
What is the formula to convert miles to kilometers?
Multiply the number of miles by 1.609344. To go back the other way, multiply kilometers by 0.62137119.
What is 10 miles in kilometers?
10 miles = 16.0934 kilometers. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.