Kilometer per Hour (km/h)
The kilometer per hour is a unit of speed, used for vehicle speedometers, road speed limits, and weather reports worldwide. Its symbol is km/h.
km/h
mph
1 kilometer per hour equals
| Miles per Hour | 0.621371 mph |
| Meters per Second | 0.277778 m/s |
About the kilometer per hour
Kilometers per hour became the standard speed unit in most countries as the metric system spread in the 19th and 20th centuries.
In everyday use the kilometer per hour appears in vehicle speedometers, road speed limits, and weather reports worldwide. As a point of reference: the typical highway speed limit in Europe is 120 to 130 km/h.