Convert miles per hour to kilometers per hour
1 mph = 1.609344 km/h. Change the amount below, or read the formula and the reference table further down.
1 mile per hour equals
kilometers per hour
1 mph = 1.609344 km/h
The formula
Miles per hour and kilometers per hour both measure speed from the same zero, so a single multiplier does the job.
km/h = mph × 1.609344
Going the other way? Convert kilometers per hour to miles per hour.
Miles per hour to kilometers per hour table
Common values, rounded for reading.
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 1 | 1.6093 |
| 2 | 3.2187 |
| 3 | 4.828 |
| 4 | 6.4374 |
| 5 | 8.0467 |
| 6 | 9.6561 |
| 7 | 11.2654 |
| 8 | 12.8748 |
| 9 | 14.4841 |
| 10 | 16.0934 |
| 15 | 24.1402 |
| 20 | 32.1869 |
| 25 | 40.2336 |
| 30 | 48.2803 |
| 40 | 64.3738 |
| 50 | 80.4672 |
| 75 | 120.7 |
| 100 | 160.93 |
| 250 | 402.34 |
| 500 | 804.67 |
| 1,000 | 1,609.34 |
Questions people ask
- How many kilometers per hour are in a mile per hour?
- One mile per hour equals 1.609344 kilometers per hour.
- How do I convert miles per hour to kilometers per hour by hand?
- Multiply the number of miles per hour by 1.609344. For a rough check, 1.6 is close enough for most everyday use.
- What is 1 mile per hour in kilometers per hour?
- 1 mile per hour is 1.609344 kilometers per hour.
Calcuit generates this page from a unit table, so the factors here match every other page on the site.