Miles per hour

Last updated
miles per hour
1974 MG MGB GT - Flickr - The Car Spy (14).jpg
Automobile speedometer, indicating speed in miles per hour
General information
Unit system Imperial, United States customary units
Unit of speed
Symbolmph
Conversions
1 mph in ...... is equal to ...
    km/h    1.609344
       0.44704
    kn    0.868976
    ft/s    1.467

Miles per hour (mph, MPH or mi/h) is a British imperial and United States customary unit of speed expressing the number of statute miles covered in one hour. It is used in the United Kingdom, the United States, and a number of smaller countries, most of which are UK or US territories, or have close historical ties with the UK or US.

Contents

Usage

50 mph speed limit sign in the United Kingdom UK 50 mph speed limit sign.jpg
50 mph speed limit sign in the United Kingdom
65 mph speed limit sign in the United States 2014-08-19 11 59 11 Speed limit 65 miles per hour sign along northbound Nevada State Route 225 (Mountain City Highway) about 10.9 miles north of Nevada State Route 535 (Idaho Street) in Elko County, Nevada.JPG
65 mph speed limit sign in the United States

Road traffic

Speed limits and road traffic speeds are given in miles per hour in the following jurisdictions:

Rail networks

Miles per hour is the unit also used in the Canadian rail system. [32]

Nautical and aeronautical usage

Nautical and aeronautical applications favour the knot as a common unit of speed. (One knot is one nautical mile per hour, with a nautical mile being exactly 1,852 metres or about 6,076 feet.)

Other usage

In some countries mph may be used to express the speed of delivery of a ball in sporting events such as cricket, tennis and baseball.

Conversions

1 mph= 0.44704  m/s (exactly)
= 1.609344  km/h (exactly)
≈ 1.467  ft/s (approximately)
0.868976  kn
Conversions between common units of speed
m/s km/h mph knot ft/s
1 m/s =13.62.236936*1.943844*3.280840*
1 km/h =0.277778*10.621371*0.539957*0.911344*
1 mph =0.447041.60934410.868976*1.466667*
1 knot =0.514444*1.8521.150779*11.687810*
1 ft/s =0.30481.097280.681818*0.592484*1

(* = approximate values)

See also

Related Research Articles

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Land speed record the highest speed achieved by a person using a vehicle on land

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Railway speed record Wikimedia list article

The world record for a conventional wheeled passenger train is held by France's TGV, set in 2007 when it reached 574.8 km/h (357.2 mph) on a 140 km section of track.

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