KM to Miles Converter
Convert kilometers to miles instantly. Useful for travel, running, cycling, road distances, maps and switching between metric and imperial units.
Enter kilometers
Type a distance in kilometers and get the equivalent distance in miles.
Quick km to miles examples
How to convert km to miles
To convert kilometers to miles, multiply the number of kilometers by 0.621371. This gives the approximate distance in miles.
Why kilometers and miles differ
Kilometers are part of the metric system. Miles are part of the imperial system and are still widely used for road distances in some countries.
When this is useful
Use this converter for travel distances, running races, cycling routes, maps, road signs and comparing international distance measurements.
Common km to miles mistakes
Assuming kilometers and miles are close to equal
One mile is much longer than one kilometer. Ten kilometers is about 6.21 miles, not 10 miles.
Using the reverse conversion
To convert kilometers to miles, multiply by 0.621371. To convert miles to kilometers, multiply by 1.60934.
Rounding too early
For casual use, rounding is fine. For races, maps or technical work, keep more decimal places until the final answer.
Free online kilometers to miles converter
This km to miles converter helps you convert distances from kilometers to miles instantly. It is useful when reading maps, planning travel, comparing road distances or converting running and cycling distances.
The kilometer is used in most countries as part of the metric system, while miles are commonly used for road distances in places such as the United States and the United Kingdom.
Helpful guide
Want the bigger picture behind metric and imperial units? Read our Metric vs Imperial Units guide.
KM to Miles Converter FAQ
How do I convert km to miles?
Multiply kilometers by 0.621371. For example, 10 km × 0.621371 = 6.21371 miles.
How many miles is 1 km?
1 kilometer is approximately 0.621371 miles.
How many miles is 5 km?
5 kilometers is approximately 3.1069 miles.
How many miles is 10 km?
10 kilometers is approximately 6.2137 miles.
Is a mile longer than a kilometer?
Yes. One mile is approximately 1.60934 kilometers.
Is this converter free?
Yes. It is free and runs locally in your browser.