km to miles
Translate route distances and race lengths. These are international statute miles, not nautical miles.
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert kilometers to miles
Translate route distances and race lengths. These are international statute miles, not nautical miles.
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 km, the result is approximately 6.213711922 mi. To go the other way, edit the result above or swap the units.
International feet and miles are used, not historical US survey units.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 | 0.6213711922 |
| 2 | 1.242742384 |
| 5 | 3.106855961 |
| 10 | 6.213711922 |
| 20 | 12.42742384 |
| 25 | 15.53427981 |
| 50 | 31.06855961 |
| 100 | 62.13711922 |
| 500 | 310.6855961 |
| 1000 | 621.3711922 |