The conversion formula for metres per second (m/s) to miles per hour (mi/h, mph, miph) conversions is as follows:

• 1 metre per second = 2.236936 miles per hour approximately

The conversion formula for kilometres per hour (km/h, kph, kmph) to metres per second (m/s) conversions is as follows:

• 1 mile per hour = 0.44704 metres per second

The first formula is correct to six decimal places, the exact value being 1/0.44704.

The conversion from metres per second to miles per hour can be thought of in two steps:

1. Convert metres per second to metres per hour by multiplying by 3,600, the number of seconds in an hour.

2. Convert metres per hour to miles per hour by dividing by 1,609.344, the number of metres in a mile.

The metre per second is the main SI derived unit for both speed and velocity. It is used for most scientific work, outside of astronomy but isn't used on a daily basis for car speeds and road speed limits.

Unit System

SI Metric

Definition

One metre per second is the speed when travelling one metre distance in one second time.

Base Unit

metre and second

The metre per second is derived from the SI base units of distance and time.

Abbreviation

Formal: m s-1

Alternate abbreviations include m·s-1, m/s and mps.

Information

The metre per second is one of the simplest SI units being derived from the distance unit of metres and the time unit of seconds.

Global Adoption

Metres per second are recognised world wide although they are not often used outside of scientific applications in the United States.

Conversion Formulae

• 1 metre per second = 1,000 millimetres per second
• 1 metre per second = 100 centimetres per second
• 1 metre per second = 10 decimetres per second
• 1 metre per second = 0.1 decametres per second
• 1 metre per second = 0.01 hectometres per second
• 1 metre per second = 0.001 kilometres per second
• 1 metre per second = 3.6 kilometres per hour
• 1 metre per second = 2.23694 miles per hour

• 1 millimetre per second = 0.001 metres per second
• 1 centimetre per second = 0.01 metres per second
• 1 decimetre per second = 0.1 metres per second
• 1 decametre per second = 10 metres per second
• 1 hectometre per second = 100 metres per second
• 1 kilometre per second = 1,000 metres per second
• 1 kilometre per hour = 0.27778 metres per second
• 1 mile per hour = 0.44704 metres per second

Miles per hour are the main unit of speed used in the United States, United Kingdom and other countries that use imperial or US customary measurements for road signs and speedometers.

Unit System

Imperial & US Customary

Definition

The mile per hour is defined as the speed when travelling a distance of one mile in a time of one hour.

Base Units

yard and second

Miles per hour is a derived unit based upon units of distance (mile) and time (hour). Each of these units is defined in terms of other units, the mile being defined as 1760 yards and the hour being defined as 3,600 seconds.

Abbreviation

Formal: mi/h

The most common abbreviation for miles per hour is mph, with other abbreviations including m.p.h., MPH, M.P.H, m/h, m/hr and mi/hr.

Information

Miles per hour came into common useage during the 18th century with the running of regular stage coaches in the United Kingdom (This link shows an 1825 document specifying a speed of 20mph for waggon post). After this the unit became the de facto standard for speed of locomotives on the railways in countries using imperial or US customary units.

Despite the now almost universal adoption of the metric system, a few countries (again those influenced by the UK and the US) still use miles per hour as their standard for road speed limits.

Global Adoption

Miles per hour are used in countries that have not yet fully adopted the metric system, including the United States, United Kingdom, Belize, Liberia and Myanmar.

Conversion Formulae

• 1 mile per hour = 0.44704 metres per second
• 1 mile per hour = 1,000 kilometres per hour
• 1 mile per hour = 0.0166667 miles per minute
• 1 mile per hour = 0.0002778 miles per second
• 1 mile per hour = 0.4888889 yards per second
• 1 mile per hour = 1.4666667 feet per second
• 1 mile per hour = 17.6 inches per second

• 1 metre per second = 2.23694 miles per hour
• 1 kilometre per hour = 0.621371 miles per hour
• 1 mile per minute = 60 miles per hour
• 1 mile per second = 3600 miles per hour
• 1 yard per second = 2.0454545 miles per hour
• 1 foot per second = 0.6818181 miles per hour
• 1 inch per second = 0.056818181 miles per hour

•   Kilometres Per Hour to Miles Per Hour

•   Metres Per Second to Kilometres Per Hour

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•   Lengths

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