Convert Kilometer per hour to Mile per hour

One km/h equals 0.6213711922 mph. This converter allows you to easily convert between Kilometer per hour and Mile per hour in real time.

Formula

km/h × 0.6213711922 = mph

Example: 1 km/h = 0.6213711922 mph

What is Kilometer per hour?

The kilometer per hour is a unit of speed expressing the number of kilometers traveled in one hour. It is the standard unit for vehicle speed in most countries, displayed on road signs and car speedometers. The top speed of Japan's bullet train is about 320 km/h, and a world-class marathon runner maintains a pace of roughly 21 km/h. One km/h equals approximately 0.2778 m/s.

What is Mile per hour?

The mile per hour is a unit of speed used primarily in the United States and the United Kingdom for road speed limits and vehicle speeds. US highway speed limits typically range from 55 to 75 mph, while residential areas are usually 25 to 35 mph. In sports, baseball pitching speeds (topping out around 105 mph in Major League Baseball) and golf swing speeds are expressed in mph. One mph is exactly 0.44704 m/s.