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Speed converter
Kilometers per hour to Miles per hour
Convert kilometers per hour (km/h) to miles per hour (mph) instantly. Type a value in either box — it works both ways.
1 km/h = 0.621371 mph
Formula
Miles per hour = kilometers per hour × 0.621371ADVERTISEMENT
Kilometers per hour to Miles per hour conversion chart
| Kilometers per hour | Miles per hour |
|---|---|
| 10 km/h | 6.2137 mph |
| 20 km/h | 12.4274 mph |
| 30 km/h | 18.6411 mph |
| 40 km/h | 24.8548 mph |
| 50 km/h | 31.0686 mph |
| 60 km/h | 37.2823 mph |
| 70 km/h | 43.496 mph |
| 80 km/h | 49.7097 mph |
| 100 km/h | 62.1371 mph |
| 120 km/h | 74.5645 mph |
About kilometers per hour and miles per hour
Both units measure speed. km/h and m/s are metric; mph is used in the US and UK; knots are used in aviation and at sea (1 knot = 1.852 km/h).
Related converters
Miles per hour to Kilometers per hourmph → km/hKnots to Kilometers per hourkn → km/hMeters per second to Kilometers per hourm/s → km/h
Frequently asked questions
How many miles per hour are in a kilometer per hour?
There are 0.621371 miles per hour in one kilometer per hour (1 km/h = 0.621371 mph).
How do you convert kilometers per hour to miles per hour?
Multiply the number of kilometers per hour by 0.621371 to get miles per hour. The calculator above does this automatically as you type.
What is 50 km/h in mph?
50 km/h = 31.0686 mph. See the full conversion chart above for more common values.