How to convert miles per hour to kilometers per hour
Multiply the number of miles per hour by 1.6093:
kilometers per hour = miles per hour × 1.6093
Going the other way, 1 kilometer per hour = 0.621371 miles per hour, so divide kilometers per hour by 1.6093 (or multiply by 0.621371) to get miles per hour.
Example: 25 miles per hour × 1.6093 = 40.2336 kilometers per hour.
Miles per hour to kilometers per hour conversion table
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 1 | 1.6093 |
| 2 | 3.2187 |
| 3 | 4.828 |
| 5 | 8.0467 |
| 10 | 16.0934 |
| 20 | 32.1869 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.9344 |
| 500 | 804.672 |
| 1,000 | 1,609.34 |
About these units
Mile per hour (mph) and kilometer per hour (km/h) are both units of speed. Kilometers per hour are used on roads in most of the world, miles per hour in the US and UK, and knots (nautical miles per hour) at sea and in the air.
Related conversions
kilometers per hour to miles per hour · knots to miles per hour · miles per hour to knots · all units