Convert Miles per hour to Kilometers per hour
Convert miles per hour to kilometers per hour free and instantly. 1 mile per hour = 1.609343 km/h. Exact formula, worked example and a handy reference table.
To convert miles per hour to kilometers per hour, multiply by 1.609343 (1 mile per hour = 1.609343 kilometers per hour). For example, 10 miles per hour = 16.09343 kilometers per hour.
Why convert miles per hour to kilometers per hour?
Both miles per hour and kilometers per hour measure speed, so converting between them is a simple multiplication: one mile per hour equals 1.609343 kilometers per hour. Type any value into the converter above for an instant answer, or use the formula and reference table below.
Miles per hour to kilometers per hour formula
Kilometers per hour = miles per hour × 1.609343
Worked example: 10 miles per hour = 16.09343 kilometers per hour.
Miles per hour to kilometers per hour conversion table
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 1 | 1.609343 |
| 2 | 3.218685 |
| 3 | 4.828028 |
| 5 | 8.046714 |
| 10 | 16.09343 |
| 20 | 32.18685 |
| 50 | 80.46714 |
| 100 | 160.9343 |
Miles per hour to Kilometers per hour — frequently asked questions
How many kilometers per hour are in a mile per hour?
One mile per hour equals 1.609343 kilometers per hour. To convert any amount, multiply the number of miles per hour by 1.609343.
How do you convert miles per hour to kilometers per hour?
Multiply by 1.609343: Kilometers per hour = miles per hour × 1.609343. For example, 10 miles per hour = 16.09343 kilometers per hour.
How do I convert kilometers per hour back to miles per hour?
Do the reverse conversion — see our kilometers per hour-to-miles per hour converter for the formula and an instant calculator.
Is this miles per hour-to-kilometers per hour converter free?
Yes — it's completely free, instant and runs in your browser with no sign-up. Nothing you type is uploaded.