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Kilometers to Miles (km to mi) Converter

1 kilometer (km) = 0.621371 miles (mi). To convert kilometers to miles, multiply by 0.621371: 5 km × 0.621371 = 3.10686 mi. Also searched as kms to mile, kilometre to mile, kilometres to miles.

1 km = 0.6213711922 mi
Convert the other way: Miles to Kilometers

Quick facts

How to convert kilometers to miles

  1. Take the value in kilometers.
  2. Multiply it by 0.621371 (the number of miles in one kilometer).
  3. Round the result to the precision you need.
mi = km × 0.621371

Worked example (a 5K run): 5 km × 0.621371 = 3.10686 mi.

To convert miles back to kilometers, multiply by 1.60934, or divide by 0.621371.

Source: NIST Special Publication 811 (2008), Appendix B; the international yard and pound agreement of 1959 (1 inch = 25.4 mm exactly).

Kilometers to Miles conversion table

Kilometers to Miles conversion table
Kilometers [km]Miles [mi]
0.01 km0.0062137119 mi
0.1 km0.0621371192 mi
1 km0.6213711922 mi
2 km1.2427423845 mi
3 km1.8641135767 mi
5 km3.1068559612 mi
10 km6.2137119224 mi
20 km12.4274238447 mi
50 km31.0685596119 mi
100 km62.1371192237 mi
1000 km621.3711922373 mi

km to mi chart from 1 to 100

Miles to Kilometers conversion table

Miles to Kilometers conversion table
Miles [mi]Kilometers [km]
0.01 mi0.01609344 km
0.1 mi0.1609344 km
1 mi1.609344 km
2 mi3.218688 km
3 mi4.828032 km
5 mi8.04672 km
10 mi16.09344 km
20 mi32.18688 km
50 mi80.4672 km
100 mi160.9344 km
1000 mi1609.344 km

Kilometers vs Miles

KilometerMile
Symbolkmmi
Equals1 km = 0.621371 mi1 mi = 1.60934 km

What is a kilometer?

One thousand meters. Used for road distances and geography in every country except the US, UK, and Myanmar.

What is a mile?

A US customary and imperial unit equal to 5,280 feet or 1,609.344 meters. The standard road-distance unit in the US and UK.

Frequently asked questions

How many miles are in a kilometer?

There are 0.621371 miles in 1 kilometer (1 km = 0.6213711922 mi).

How many kilometers are in a mile?

There are 1.60934 kilometers in 1 mile (1 mi = 1.609344 km).

How do I convert kilometers to miles?

Multiply the number of kilometers by 0.621371. For example, 10 km × 0.621371 = 6.21371 mi. To convert back, multiply by 1.60934.

What is 10 km in miles?

10 km = 6.21371 mi.

What is 100 km in miles?

100 km = 62.1371 mi.

Is the conversion exact?

Yes. The factor comes from the official definitions of both units (NIST Special Publication 811 (2008), Appendix B; the international yard and pound agreement of 1959 (1 inch = 25.4 mm exactly)). Results are shown to up to 10 decimal places; round them to suit your purpose.

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Reviewed by

Dr. Muhammad Amjad Khadim PhD Mathematics

Dr. Muhammad Amjad Khadim holds a PhD in Mathematics. He writes and reviews the guides on pakmath.com and checks every formula, conversion factor and worked example against published standards and official guidance before it goes live. Spotted an error? Tell us and it will be corrected.

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First published 28 October 2026 · Last reviewed 5 November 2026