What is mile per minute?

Mile per minute is a unit of speed equal to 60 miles per hour. It is occasionally used in motorsport, aviation briefings, and quick calculations for high-speed travel in imperial measurement systems.

Real-world uses

Miles per minute is occasionally used in aviation for expressing high speeds in a more intuitive way than mph for American audiences. An airliner cruising at about 575 mph is traveling roughly 9.6 miles per minute, making distance-to-destination calculations easier.

History

Miles per minute has never been widely adopted as a formal unit but emerged informally in American aviation contexts where expressing high speeds in mph yields very large numbers. It provides a more intuitive sense of how quickly distance is covered.

Common mistakes

Confusing miles per minute with miles per hour—1 mi/min = 60 mph. This is a speed unit rarely seen in everyday use, so people may misinterpret the scale of the numbers involved.

What is mach (approx at sea level)?

Mach is a dimensionless speed unit expressing the ratio of an object’s speed to the local speed of sound. At sea level, Mach 1 is approximately 343 m/s. It is used in aviation and aerodynamics to characterise high-speed flight regimes.

Real-world uses

Mach numbers are used in aerospace engineering and aviation to describe aircraft speed relative to the speed of sound. Commercial jets cruise near Mach 0.85, military fighters reach Mach 2+, and hypersonic vehicles exceed Mach 5.

History

Named after Austrian physicist Ernst Mach, who studied supersonic projectiles in the 1880s. The Mach number was formally defined by Swiss engineer Jakob Ackeret in 1929. Chuck Yeager first broke the sound barrier (Mach 1) in 1947 in the Bell X-1.

Common mistakes

Treating Mach as a fixed speed—it varies with altitude and temperature because the speed of sound changes. Mach 1 is about 343 m/s at sea level (15°C) but about 295 m/s at 11,000 m altitude.

When is this conversion used?

Converting mile per minute to mach (approx at sea level) is useful in the speed domain when comparing values across different measurement standards or applying formulas that require a specific unit.

Worked examples

1 mile per minute = 0.07882218 mach (approx at sea level)

1 mach (approx at sea level) = 340.29 metre per second

How to convert mile per minute to mach (approx at sea level)

To convert mile per minute to mach (approx at sea level), multiply the value by 0.07882218.

To convert mach (approx at sea level) back to mile per minute, multiply by 12.68678418.

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 minute to mach (approx at sea level)

mile per minute	mach (approx at sea level)
0.1	0.00788222
0.5	0.03941109
1	0.07882218
2	0.15764436
5	0.39411091
10	0.78822181
25	1.97055453
50	3.94110905
100	7.88221811
250	19.70554527
500	39.41109054
1,000	78.82218108

Common values

	mile per minute	mach (approx at sea level)
Walking speed	0.05219518 mile per minute	0.00411414 mach (approx at sea level)
City speed limit	0.51822357 mile per minute	0.04084751 mach (approx at sea level)
Highway driving	1.1669351 mile per minute	0.09198037 mach (approx at sea level)
Commercial aircraft	9.32056788 mile per minute	0.73466749 mach (approx at sea level)
Speed of sound (sea level)	12.68678418 mile per minute	1 mach (approx at sea level)

Available Speed units

More mile per minute conversions

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