What is mile per hour?

Mile per hour is a unit of speed equal to one mile travelled in one hour. It is the standard unit for road speeds, vehicle performance ratings, and weather reports in the United States and United Kingdom.

Real-world uses

Miles per hour is the standard speed unit for road traffic in the United States, the United Kingdom, and a few other countries. Baseball pitching speed, hurricane wind categories (Saffir-Simpson scale), and NASCAR race speeds are quoted in mph.

History

Miles per hour became the standard speed expression in English-speaking countries with the advent of railways and later automobiles. The first US speed limit (8 mph in New York City, 1901) and British speed cameras use mph as the legal standard.

Common mistakes

Assuming mph-to-km/h conversion is a simple ×1.5—the actual factor is 1.609. Also, forgetting that UK and US speed limits both use mph, which can mislead visitors from metric countries into driving too fast or too slow.

What is metre per minute?

Metre per minute is a unit of speed expressing the distance in metres covered in one minute. It is used in industrial machinery, conveyor belt speeds, and slow-motion technical processes.

Real-world uses

Metres per minute is used in manufacturing for conveyor belt speeds, CNC machine feed rates, and surface cutting speeds. Treadmill speeds at low settings may be displayed in m/min. It is also used for walking speed in pedestrian traffic studies.

History

Metres per minute became a practical unit in industrial settings where processes operate too slowly for m/s to give convenient numbers but too fast for m/h. It is particularly entrenched in machining and metalworking standards.

Common mistakes

Confusing metres per minute with metres per second—they differ by a factor of 60. An average walking speed of about 80 m/min equates to roughly 1.33 m/s or 4.8 km/h.

When is this conversion used?

Converting between mile per hour and metre per minute is common when working across metric and imperial systems, such as international trade, travel between countries with different measurement standards, or following instructions from a different region. Speed limits, vehicle speedometers, and weather reports for wind speeds use different units depending on the country, making km/h to mph conversion one of the most practical speed conversions.

Worked examples

1 mile per hour = 26.8224 metre per minute

1 metre per minute = 0.01666667 metre per second

How to convert mile per hour to metre per minute

To convert mile per hour to metre per minute, multiply the value by 26.8224.

To convert metre per minute back to mile per hour, multiply by 0.03728227.

Measurement standards

The SI unit of speed is metres per second (m/s), a derived unit requiring no independent definition. The knot is defined as exactly one nautical mile (1,852 metres) per hour and is sanctioned for maritime and aeronautical navigation by the International Civil Aviation Organization.

Did you know?

The fastest human-made object is the Parker Solar Probe, which reached 635,266 km/h (about 176 km/s) in 2024 during a close pass of the Sun — fast enough to travel from New York to Tokyo in under a minute.

Quick reference: mile per hour to metre per minute

mile per hour	metre per minute
0.1	2.68224
0.5	13.4112
1	26.8224
2	53.6448
5	134.112
10	268.224
25	670.56
50	1,341.12
100	2,682.24
250	6,705.6
500	13,411.2
1,000	26,822.4

Common values

	mile per hour	metre per minute
Walking speed	3.13171081 mile per hour	84 metre per minute
City speed limit	31.09341446 mile per hour	834 metre per minute
Highway driving	70.01610594 mile per hour	1,878 metre per minute
Commercial aircraft	559.23407301 mile per hour	15,000 metre per minute
Speed of sound (sea level)	761.20705082 mile per hour	20,417.4 metre per minute

Available Speed units

More mile per hour conversions

Assumption: Mach uses an approximate sea-level reference (about 340.29 m/s).