Kilometers to Miles (km to mi)
Convert kilometres to miles for road trips, running races and cycling routes.
Runs in your browser
How to use
- Enter the distance in kilometres.
- Read the value in miles.
- Check the table for race distances.
How it works
Exact factor: 1 km = 0.621371 mi. Quick estimate: multiply by 0.6 (100 km → 60 mi, exact 62.1 mi), or take half and add a tenth of the km.
Speed limits convert the same way: 50 km/h is 31.1 mph, 90 km/h is 55.9 mph and 130 km/h is 80.8 mph.
Examples
- 10K race
- 10 km = 6.21 miles.
- Marathon
- 42.195 km = 26.22 miles.
Common uses
- Running and cycling
- Road trips
- Speed and distance signs abroad
Privacy & security
This tool runs entirely in your browser. Your files and text are never uploaded to our servers — processing happens on your device and results are created locally. How each tool handles files
Frequently asked questions
How many miles is 5K?
3.11 miles.
How many km in a mile?
1.609344 km.
Is this the nautical mile?
No. This converter uses the statute (land) mile. A nautical mile, used at sea and in aviation, is 1.852 km, so 10 km is 5.40 nautical miles.
How many miles is 10 km?
10 km = 6.21 mi.
How many miles is 5 km?
5 km = 3.11 mi.
How many miles is 100 km?
100 km = 62.1 mi.
How many miles is 42.195 km?
42.195 km = 26.22 mi, the marathon distance.
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