Miles per hour
Miles per hour (abbreviated mph, MPH or mi/h) is an imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. It is used in the United States, United Kingdom and many Commonwealth nations, particularly in the Caribbean region.
|Miles per hour|
Automobile speedometer, indicating speed in miles per hour
|Unit system||Imperial, United States customary units|
|1 mph in ...||... is equal to ...|
Speed limits and road traffic speeds are given in miles per hour in the following jurisdictions (elsewhere kilometers per hour are used):
- Antigua & Barbuda
- The Bahamas
- St. Kitts & Nevis,
- St. Lucia
- St. Vincent & the Grenadines
- United Kingdom
- The following British Overseas Territories:
- The Crown dependencies:
- United States
- The following United States overseas dependencies:
Road traffic speeds in other countries are indicated in kilometres per hour, while occasionally both systems are used. For example, in Ireland, a judge considered a speeding case by examining speeds in both kilometres per hour and miles per hour. The judge was quoted as saying the speed seemed "very excessive" at 180 km/h but did not look "as bad" at 112 mph; a reduced fine was still imposed on the speeding driver.
Miles per hour is the unit also used in the Canadian rail system, which uses km/h on roads.
Nautical and aeronautical usageEdit
|1 m/s =||1||3.6||9362.236||8441.943||840 3.280|
|1 km/h =||7780.277||1||3710.621||9570.539||344 0.911|
|1 mph =||040.447||3441.609||1||9760.868||667 1.466|
|1 knot =||4440.514||1.852||7791.150||1||810 1.687|
|1 ft/s =||0.3048||281.097||8180.681||4840.592||1|
(Values in bold face are exact.)
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