**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 mph.

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.

mph to knot

mph to metre/hour

mph to foot/second

mph to speed of sound [metal]

mph to speed of light [vacuum]

mph to dekametre/day

mph to metre/day

mph to mile/minute

mph to dekametre/hour