How many miles are in a kilometer?

About 0.6214 miles — a kilometer is roughly six-tenths of a mile.

How do I convert miles to kilometers?

Multiply by 1.609. For example, 26.2 mi × 1.609 ≈ 42.2 km (a marathon).

What is a 5K in miles?

A 5-kilometer race is about 3.11 miles.

Kilometers to Miles

One mile is about 1.609 kilometers. Convert either way for travel distances, running races, road-trip planning, and reading a car odometer set to the other unit.

Your numbers

Result

6.21

Unit: miles

Quick reference
Kilometers	Miles
1	0.62
5	3.11
10	6.21
42	26.1
50	31.07
100	62.14

How to convert

To go from kilometers to miles, divide by 1.609 (or multiply by 0.6214): 10 km ÷ 1.609 ≈ 6.21 mi. For the reverse, multiply by 1.609. The mile is defined as exactly 1.609344 km.

Handy landmarks

A 5K run is 3.11 miles and a 10K is 6.21 miles; a marathon (42.195 km) is 26.22 miles. A quick mental shortcut: multiply km by 0.6 for a rough mile figure, or take miles × 1.6 for km — close enough for directions, though not for precise work.

Frequently asked questions

Sources

International mile definition (exactly 1.609344 km)

Related calculators

Conversions

m → ft

Convert meters to feet and back. One meter is about 3.2808 feet. Useful for height, room dimensions, land and any spec sheet in the other system.

Calculate Conversions

Inches → cm

Convert inches to centimeters instantly. Multiply by 2.54 — the relation is exact. Works both ways, with a quick reference table for common inch sizes.

Calculate