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Convert km to miles

1 kilometer equals 0.621371 miles. To convert kilometers to miles, multiply the number of kilometers by 0.621371: for example, 10 km is 6.21371 mi. Ethical Tube's free km to miles converter does the math as you type, and the chart below lists common values.

1 km = 0.621371 mi

1 km
0.621371 mi
1 mi
1.60934 km
Formula
mi = km × 0.621371
Measures
Length
Price
Free
Works offline
Yes

Conversion chart

km to miles chart

Kilometers (km)Miles (mi)
1 km0.621371 mi
2 km1.24274 mi
3 km1.86411 mi
4 km2.48548 mi
5 km3.10686 mi
6 km3.72823 mi
8 km4.97097 mi
10 km6.21371 mi
12 km7.45645 mi
15 km9.32057 mi
20 km12.4274 mi
25 km15.5343 mi
50 km31.0686 mi
100 km62.1371 mi

How it works

How to convert km to miles

  1. Know the formula

    mi = km × 0.621371. In words: multiply the number of kilometers by 0.621371.

  2. Work an example

    10 km → 6.21371 mi. Round to two or three decimal places for everyday use.

  3. Or type it in

    Enter any value in the converter above and the answer appears instantly, in both directions.

Good to know

About length units

  • Since 1959, one inch is defined as exactly 2.54 centimeters, so conversions between metric and US lengths are exact.
  • A foot is 12 inches, a yard is 3 feet, and a mile is 5,280 feet.

FAQ

Questions, answered

How many miles are in a kilometer?

There are 0.621371 miles in 1 kilometer. To convert kilometers to miles, multiply the number of kilometers by 0.621371.

What is 10 km in miles?

10 kilometers is 6.21371 miles.

How do you convert miles back to km?

Multiply the number of miles by 1.60934. 1 mile is 1.60934 kilometers.

Is this km to miles converter free?

Yes. It's free and works in any browser, even offline once the page has loaded. The answer updates as you type, and nothing you enter is sent anywhere.

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