Miles per hour to Kilometers per hour
Enter a value in Miles per hour and get the result in Kilometers per hour instantly.
1 mph = 1.6093 km/h
How to convert Miles per hour to Kilometers per hour
Multiply the number of Miles per hour by 1.6093 to get Kilometers per hour. To go the other way, divide by that same number instead.
Need the opposite direction? Use the Kilometers per hour to Miles per hour converter.
Miles per hour to Kilometers per hour conversion table
| Miles per hour | Kilometers per hour |
|---|---|
| 1 mph | 1.6093 km/h |
| 2 mph | 3.2187 km/h |
| 3 mph | 4.828 km/h |
| 5 mph | 8.0467 km/h |
| 10 mph | 16.0934 km/h |
| 20 mph | 32.1869 km/h |
| 50 mph | 80.4672 km/h |
| 100 mph | 160.9344 km/h |
Speed and velocity units
Kilometers per hour and miles per hour are the everyday road units; 100 km/h is about 62 mph. Meters per second is the scientific standard, and the knot — one nautical mile per hour — is used in aviation and at sea because it maps cleanly onto degrees of latitude.
Common questions
How many kilometers per hour are in 1 mph?
One mph equals 1.6093 km/h. Multiply any number of miles per hour by 1.6093 to get the same amount in kilometers per hour.
How do I convert miles per hour to kilometers per hour quickly?
For a rough figure in your head, round 1.6093 to the nearest easy number and adjust. Use the converter above when the exact value matters.
Is this conversion exact?
The ratio between miles per hour and kilometers per hour is a fixed, defined value, so the conversion is exact. Results are rounded for display only.