How to convert MPH to km/h
The conversion is a single multiplication: 1 mph = 1.609344 km/h. To convert mph to km/h, multiply by 1.609344. To go back, multiply km/h by 0.621371 (or divide by 1.609344). These factors are exact by definition.
Examples
- 60 mph = 96.56064 km/h
- 100 mph = 160.9344 km/h
MPH to km/h conversion table
| MPH (mph) | km/h (km/h) |
|---|---|
| 1 | 1.609344 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 20 | 32.18688 |
| 30 | 48.28032 |
| 50 | 80.4672 |
| 60 | 96.56064 |
| 70 | 112.65408 |
| 80 | 128.74752 |
| 100 | 160.9344 |
Frequently asked questions
- How do I convert km/h back to MPH?
- Use the km/h to MPH 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.