Unit Converter

KM to Miles Converter

Convert kilometers to miles instantly. Useful for travel, running, cycling, road distances, maps and switching between metric and imperial units.

km

Enter kilometers

Type a distance in kilometers and get the equivalent distance in miles.

Example: 10 kilometers
This conversion runs locally in your browser. No input is uploaded or stored.
Miles
6.2137
10 kilometers equals about 6.2137 miles.
Kilometers 10 km
Miles 6.2137 mi
Formula km ร— 0.621371
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Instant conversion Updates as you type.
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Travel friendly Useful for maps and road distances.
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Fitness friendly Convert running and cycling distances.
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Quick km to miles examples

1 km = 0.6214 miles
5 km = 3.1069 miles
10 km = 6.2137 miles
21.1 km โ‰ˆ 13.1 miles
42.2 km โ‰ˆ 26.2 miles

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.

Miles = kilometers ร— 0.621371

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.

1 mile โ‰ˆ 1.60934 km

When this is useful

Use this converter for travel distances, running races, cycling routes, maps, road signs and comparing international distance measurements.

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Common km to miles mistakes

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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.

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Using the reverse conversion

To convert kilometers to miles, multiply by 0.621371. To convert miles to kilometers, multiply by 1.60934.

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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 ร— 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.