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 . The definition, agreement and practical use of units of measurement have played a crucial role in human endeavour from early ages up to this day. ... Speed is the rate of motion, or equivalently the rate of change of position, many times expressed as distance d moved per unit of time t. ... A mile is a unit of length, usually used to measure distance, in a number of different systems, including English units, Imperial units, United States customary units and Norwegian/Swedish mil. ... The hour (symbol: h) is a unit of time. ...

The preferred unit for velocity is m·s⁻¹. Speeds are often quoted in km/h especially in mainland Europe, Australia and elsewhere. Nautical and aeronautical applications usually favour the knot as a unit of speed: one knot is one nautical mile per hour. Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ... Kilometre per hour (American spelling: kilometer per hour) is a unit of both speed (scalar) and velocity (vector). ... World map showing Europe A satellite composite image of Europe Europe is one of the six inhabited continents of the Earth. ... A knot is a unit of speed, abbreviated kt or kn. ...

Conversions

1 mph is equal to:

• 0.44704 m·s⁻¹, the SI derived unit
• 1.609344 km/h
• 22/15 =1.4667 feet per second
• approx. 0.868976 knots

When converting miles per hour to another unit of measurement, or vice versa, it helps a lot to know exactly how miles and hours are related to other units of distance and time, respectively. For example, 1 mile is equal to 5,280 feet, 1,760 yards, or 1,609 meters. Likewise, 1 hour is equal to 60 minutes, or 3,600 seconds. Metre per second (U.S. spelling: meter per second) is an SI derived unit of both speed (scalar) and velocity (vector), defined by distance in metres divided by time in seconds. ... SI derived units are part of the SI system of measurement units and are derived from the seven SI base units. ... Kilometres per hour (American spelling: kilometers per hour) is a unit of both speed (scalar) and velocity (vector). ... Feet per second is a unit of speed; it expressses the number of feet traveled in one second. ... A knot is a non SI unit of speed equal to one nautical mile per hour. ... Distance is a numerical description of how far apart things lie. ... Two distinct views exist on the meaning of time. ... A foot (plural: feet) is any of several old units of distance or length, measuring around a quarter to a third of a meter. ... A yard (abbreviation: yd) is the name of a unit of length in a number of different systems, including English units, Imperial units, and United States customary units. ... The metre, or meter (U.S.), is a measure of length. ... Bold text:This article is about the written record of a meeting. ... Look up second in Wiktionary, the free dictionary. ...

Miles per hour is the unit used for speed limits on roads in the United Kingdom, United States and various other nations. Measurement is the determination of the size or magnitude of something. ... A road speed limit is the maximum speed allowed by law for road vehicles. ... This article or section does not cite its references or sources. ...

See also

• Orders of magnitude (speed)
• Velocity
• Acceleration
• Light-year