Kilometers to Miles Converter
Type a value in kilometers to get it in miles, and see the reverse conversion.
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Kilometers to Miles Converter by TheCalcTools
How the Kilometers to Miles Converter works
A statute mile is exactly 1.609344 km. Race distances are classic examples: a 10K is 6.21 miles and a marathon (42.195 km) is 26.2 miles.
To convert kilometers to miles, multiply by 0.6213711922. The calculator shows the result to 6 significant figures; the conversion factor itself is exact by definition.
Quick estimate in your head: multiply by 0.6, or use Fibonacci numbers (5 km ≈ 3 mi, 8 km ≈ 5 mi, 13 km ≈ 8 mi).
The formula
Worked example
Using the default values shown in the calculator:
| Value in kilometers (km) | 10 |
|---|
- 10 km × 0.6213711922 = 6.21371 mi.
Result:
| Miles (mi) | 6.21371 |
|---|---|
| 1 km in mi | 0.621371 |
| Your number read as mi, in km | 16.0934 |
| Feet (ft) | 32808.4 |
| Nautical miles (nmi) | 5.39957 |
Conversion table
| km | mi |
|---|---|
| 1 km | 0.621371 mi |
| 3 km | 1.86411 mi |
| 5 km | 3.10686 mi |
| 10 km | 6.21371 mi |
| 15 km | 9.32057 mi |
| 21.0975 km | 13.1094 mi |
| 42.195 km | 26.2188 mi |
| 50 km | 31.0686 mi |
| 100 km | 62.1371 mi |
| 500 km | 310.686 mi |
Frequently asked questions
What is 1 kilometer in miles?
1 kilometer (km) equals 0.621371 mi.
Sources and further reading
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This calculator gives estimates for information only. Check important results independently before you rely on them. See our disclaimer.