How to Convert a Speed From Kilometers Per Hour to Miles Per Hour

To convert a speed from kilometers per hour to miles per hour, you must first know the units of the units. The fastest way to convert a speed is to use the lower unit, i.e. KPH, and then multiply it by 1.60934. For example, if you are travelling at 37.6 km/h, you must multiply the number by 1.60934 to convert it to mph.