Convert Kilometre per hour to Mile per hour
1 Kilometre per hour = 0.621371 Mile per hour · 1 Mile per hour = 1.609344 Kilometre per hour
Conversion formula
1 km/h = 0.6213711922 mph → km/h = 0.621371 mph
The reverse direction: 1 mph = 1.609344 km/h.
Quick reference
| km/h | mph |
|---|---|
| 1 km/h | 0.621371 mph |
| 2 km/h | 1.2427424 mph |
| 3 km/h | 1.8641136 mph |
| 5 km/h | 3.106856 mph |
| 10 km/h | 6.2137119 mph |
| 20 km/h | 12.427424 mph |
| 25 km/h | 15.53428 mph |
| 50 km/h | 31.06856 mph |
| 100 km/h | 62.137119 mph |
| 250 km/h | 155.3428 mph |
| 500 km/h | 310.6856 mph |
| 1,000 km/h | 621.37119 mph |
About these units
The Kilometre per hour (km/h) and the Mile per hour (mph) are both units of speed. Under the standard definition, one km/h equals exactly 0.621371 mph. This category's SI base unit is the metre per second.