Kilometers per hour to Miles per hour
Enter a value in Kilometers per hour and get the result in Miles per hour instantly.
1 km/h = 0.621371 mph
How to convert Kilometers per hour to Miles per hour
Multiply the number of Kilometers per hour by 0.621371 to get Miles per hour. To go the other way, divide by that same number instead.
Need the opposite direction? Use the Miles per hour to Kilometers per hour converter.
Kilometers per hour to Miles per hour conversion table
| Kilometers per hour | Miles per hour |
|---|---|
| 1 km/h | 0.621371 mph |
| 2 km/h | 1.2427 mph |
| 3 km/h | 1.8641 mph |
| 5 km/h | 3.1069 mph |
| 10 km/h | 6.2137 mph |
| 20 km/h | 12.4274 mph |
| 50 km/h | 31.0686 mph |
| 100 km/h | 62.1371 mph |
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 miles per hour are in 1 km/h?
One km/h equals 0.621371 mph. Multiply any number of kilometers per hour by 0.621371 to get the same amount in miles per hour.
How do I convert kilometers per hour to miles per hour quickly?
For a rough figure in your head, round 0.621371 to the nearest easy number and adjust. Use the converter above when the exact value matters.
Is this conversion exact?
The ratio between kilometers per hour and miles per hour is a fixed, defined value, so the conversion is exact. Results are rounded for display only.