Full name: mile/hour
Plural form: miles/hour
Symbol: mph
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 2.2369362920544 mi per h.
Valid units must be of the speed type.
You can use this form to select from known units:
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.