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Convert mph to km/h, km/h to mph

Conversion Calculators

Convert mph to km/h

mph
km/h

Convert km/h to mph

km/h
mph

Conversion Definitions

What are miles per hour (mph)?

Miles per hour is a unit of speed in both US Customary Units as well as the Imperial System. It measures the number of miles travelled in an hour. The symbol for miles per hour is mph.

What are kilometers per hour (km/h)?

Kilometers per hour is a unit of speed in the Metric System. It measures the number of kilometers travelled in an hour. The symbol for kilometers per hour is km/h and the International spelling is kilometres per hour.


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