KM to miles
Kilometers to miles, both ways, race distances included.
How it works
- 01Type the distance in kilometers.
- 02Miles appear as you type. Type in the miles box to convert the other way.
- 03The chart covers everyday and race distances. Pick other units such as nautical miles if you need them.
Questions
›What are some common km to miles conversions?
1 km = 0.621371 mi, 5 km = 3.10686 mi, 15 km = 9.32057 mi and 42.195 km = 26.2188 mi.
›How many miles are in a kilometer?
One kilometer is about 0.621371 miles. The mile is defined as exactly 1.609344 kilometers.
›How do I estimate it in my head?
Multiply by 0.6, or by 5/8 for a closer answer: 8 km is about 5 miles. Going the other way, multiply miles by 1.6.
›How long are a 5K, a half marathon and a marathon in miles?
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 my data uploaded anywhere?
No. This tool runs entirely in your browser, and Rounder never sends what you type or drop in to a server, ours or anyone else's. Once the page has loaded, along with any AI model the tool uses, it even works offline.
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