Kilometers to Miles
Convert kilometers (km) to miles (mi). 1 km = 0.62137119 mi (and 1 mi = 1.609344 km). It all runs locally in your browser.
Kilometers to Miles table
| Kilometers | Miles |
|---|---|
| 0.5 km | 0.3106856 mi |
| 1 km | 0.62137119 mi |
| 2 km | 1.2427424 mi |
| 3 km | 1.8641136 mi |
| 5 km | 3.106856 mi |
| 10 km | 6.2137119 mi |
| 25 km | 15.53428 mi |
| 50 km | 31.06856 mi |
| 100 km | 62.137119 mi |
Where this conversion shows up
This is the race-day conversion. Parkruns, 5Ks and 10Ks are advertised in kilometers, while many running watches, US road signs and treadmill displays still think in miles. It also comes up reading foreign road signs: a 130 km/h motorway limit is about 81 mph, and that "Paris 150 km" sign means roughly 93 miles of driving.
Worked example
You've signed up for a 10K and train in miles. 10 km × 0.621371 = 6.21 miles — so a 10K is just past the 6-mile mark on your usual route. A half marathon (21.0975 km) works out to 13.11 miles the same way.
Rounding and precision
For everyday distances, two decimal places is plenty; for pace math, runners usually round to a tenth of a mile. A handy mental shortcut: adjacent Fibonacci numbers approximate the ratio — 5 km ≈ 3 mi, 8 km ≈ 5 mi, 13 km ≈ 8 mi.
How to convert
To convert kilometers to miles, multiply by 0.62137119. Need other units? Use the full Unit Converter.
FAQ
How many miles in a kilometer?
1 kilometer equals 0.62137119 miles (mi).
How do I convert kilometers to miles?
Multiply the kilometers value by 0.62137119. For example, 5 km = 3.106856 mi.
How many miles is a 5K and a 10K?
A 5K is 3.11 miles and a 10K is 6.21 miles. A half marathon (21.0975 km) is 13.11 miles, and a full marathon (42.195 km) is 26.22 miles.
Is a mile always 1.609 km?
The statute mile used on roads is exactly 1.609344 km. The nautical mile used at sea and in aviation is different — 1.852 km — so make sure you know which one you are converting.