Convert kilometer per hour to mile per hour
1 km/h = 0.6213711922 mph
1 km/h = 0.621 mph
1 km/h in every speed unit
| meter per second | 0.278 m/s |
| kilometer per hour | 1 km/h |
| foot per second | 0.911 ft/s |
| mile per hour | 0.621 mph |
| knot | 0.54 kn |
| foot per minute | 54.7 ft/min |
| centimeter per second | 27.8 cm/s |
| meter per hour | 1,000 m/h |
| meter per day | 24,000 m/d |
| foot per day | 78,700 ft/d |
How the conversion works
Multiply by 0.6213711922 to go from kilometer per hour to mile per hour, or divide by it to go back. Every conversion on this site routes through the SI value (m/s) rather than a table of pairwise factors, so a round-trip returns exactly what you started with.
Going the other way? mile per hour to kilometer per hour — 1 mph = 1.609344 km/h.
kilometer per hour to mile per hour — common values
| 1 km/h | 0.62137119 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 |
| 15 km/h | 9.3205679 mph |
| 20 km/h | 12.427424 mph |
| 25 km/h | 15.53428 mph |
| 50 km/h | 31.06856 mph |
| 75 km/h | 46.602839 mph |
| 100 km/h | 62.137119 mph |
| 250 km/h | 155.3428 mph |
| 500 km/h | 310.6856 mph |
| 1000 km/h | 621.37119 mph |
Other speed conversions
m/s → mphkm/h → m/skm/h → ft/skm/h → knkm/h → ft/minft/s → mphkn → mphft/min → mph