**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 2.23693629205 mile/hour.

Valid units must be of the **speed** type.

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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.

mile/hour to hectometre/second

mile/hour to inch/minute

mile/hour to dekametre/second

mile/hour to speed of light [water]

mile/hour to furlong/day [survey]

mile/hour to yard/day

mile/hour to millimetre/microsecond

mile/hour to furlong/hour [survey]

mile/hour to nautical mile/day