ABCDEFGHIJKLMNOPQRSTUVWXYZ Definition of km/h more ... An abbreviation of "kilometers per hour", a metric measure of speed. This is a sign showing a speed limit of 50 km/h 1 km/h is approximately 0.6 miles per hour. ../measure/images/speed.js See: Speed, Metric System, Kilometre | Kilometer, Hour Metric Speed (Velocity)
