Kilometers per hour converter
Convert between kilometers per hour and other units of speed
km/h
1 kilometer per hour ≈
0.621 miles per hour
* rounded result
Select how many decimal places the result will be rounded to:
Kilometer per hour (km/h)
The kilometer per hour is a unit of speed in the metric system, defined as the number of kilometers traveled in one hour. It is equal to about 0.62137 miles per hour.
Mile per hour (mph)
The mile per hour is the imperial system's unit of speed, defined as the number of miles traveled in one hour. It is equal to 1.609344 kilometers per hour.