Convert Miles per Hour to Kilometers per Hour
Miles per Hour (Miles / hour) to Kilometers per Hour (Kilometres / hour) — the formula, a worked example and a live converter, all in your browser.
Miles per Hour to Kilometers per Hour formula
To convert a measurement, multiply it by the fixed factor below:
Kilometres / hour = Miles / hour × 1.609343999
Worked example
1 Miles / hour = 1 × 1.609343999 = 1.609343999 Kilometres / hour.
Miles per Hour to Kilometers per Hour conversion table
| Miles per Hour (Miles / hour) | Kilometers per Hour (Kilometres / hour) |
|---|---|
| 1 | 1.609343999 |
| 5 | 8.046719994 |
| 10 | 16.09343999 |
| 25 | 40.23359997 |
| 50 | 80.46719994 |
| 100 | 160.9343999 |
Common uses
Useful for converting US and UK speed limits, wind speeds and running paces into kilometres per hour.
Related conversions
- Kilometers per Hour to Miles per Hour
- Knots to Miles per Hour
- Meters per Second to Kilometers per Hour
Need a different pair? Use the full unit converter for length, weight, temperature, volume, speed, area and more.
Frequently asked questions
What is the formula to convert miles per hour to kilometers per hour?
Multiply the number of miles per hour by 1.609343999 to get kilometers per hour (Kilometres / hour = Miles / hour × 1.609343999).
How many kilometers per hour are in a miles per hour?
One miles per hour equals 1.609343999 kilometers per hour.
Is this converter accurate?
Yes. It uses the exact internationally-defined conversion factors and runs entirely in your browser, so results match standards tables and nothing you type is uploaded.