**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 mile/hour.

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.

mile/hour to speed of sound [air]

mile/hour to yard/second

mile/hour to megametre/day

mile/hour to kilometre/hour

mile/hour to megametre/minute

mile/hour to inch/day

mile/hour to furlong/minute [survey]

mile/hour to furlong/hour [survey]

mile/hour to mach