How to convert Kilometers to Miles
The conversion is a single multiplication: 1 km = 0.621371 mi. To convert kilometers to miles, multiply by 0.621371. To go back, multiply miles by 1.609344 (or divide by 0.621371). These factors are exact by definition.
Examples
- 1 km = 0.621371 mi
- 12 km = 7.456454 mi
Kilometers to Miles conversion table
| Kilometers (km) | Miles (mi) |
|---|---|
| 1 | 0.621371 |
| 2 | 1.242742 |
| 3 | 1.864114 |
| 4 | 2.485485 |
| 5 | 3.106856 |
| 10 | 6.213712 |
| 20 | 12.427424 |
| 25 | 15.53428 |
| 50 | 31.06856 |
| 100 | 62.137119 |
Frequently asked questions
- How do I convert Miles back to Kilometers?
- Use the Miles to Kilometers converter, or just swap the units on the full unit converter — it shows every unit in the category at once.
- Are these conversion factors exact?
- Yes. The English units have been defined in metric terms since 1959, so the factors used here are exact by definition, not rounded approximations. Displayed results are rounded only for readability.
- Can I convert other units too?
- The unit converter also handles length, weight, volume, temperature, area, speed, pressure, energy, power, torque, and fuel economy — each with every unit shown side by side.