Full name: mile/hour
Plural form: miles/hour
Alternate spelling: mi/h
Category type: speed
Scale factor: 0.44704
The SI derived unit for speed is the meter/second.
1 meter/second is equal to 2.23693629205 mph.
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Miles per hour is a unit of speed, expressing the number of international miles covered per hour. It is commonly abbreviated in everyday use in the United States, the United Kingdom, and elsewhere to mph or MPH, although mi/h is sometimes used in technical publications.