Convert Mach to Speed Of Sound

Enter the Mach number below to convert the speed to speed of sound.

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Mach 1 = 1 speed of sound

How to Convert Mach to Speed Of Sound

Speedometers are used in vehicles to measure speed

To convert a Mach measurement to a speed of sound measurement, multiply the Mach number by the conversion ratio. Mach 1 is equal to 1 speed of sound, so use this simple formula to convert:

speed of sound = Mach number × 1

The speed in speed of sound is equal to the Mach number multiplied by 1.

For example, here's how to convert Mach 2 to speed of sound using the formula above.
Mach 2 = (2 × 1) = 2 speed of sound

Mach and speed of sound are both units used to measure speed. Keep reading to learn more about each unit of measure.

Mach

Mach, sometimes also referred to as a Mach number, is the ratio of the speed of an object to the speed of sound.

Mach can be abbreviated as M, and is also sometimes abbreviated as Ma. For example, Mach 1 can be written as 1 M or 1 Ma.

Although Mach can be abbreviated M or Ma, the Mach number is typically expressed with the number after the unit name. For example, the expression Mach 3 is preferred rather than 3 Machs or 3 M.

The speed is classified as either subsonic, transonic, supersonic, or hypersonic depending on the Mach number.

Speed classifications for various mach numbers.
Speed Classification Mach Number
Subsonic Mach < 1.0
Transonic Mach = 1.0
Supersonic Mach > 1.0
Hypersonic Mach > 5.0

Speed Of Sound

The speed of sound is the distance a sound wave travels through an elastic medium. The speed of sound through air at 20 °C is equal to 343 meters per second, or roughly 767 miles per hour.

Mach Measurements and Equivalent Speed Of Sound Conversions

Common Mach values converted to the equivalent speed of sound value
Mach Speed Of Sound
Mach 1 1
Mach 2 2
Mach 3 3
Mach 4 4
Mach 5 5
Mach 6 6
Mach 7 7
Mach 8 8
Mach 9 9
Mach 10 10
Mach 11 11
Mach 12 12
Mach 13 13
Mach 14 14
Mach 15 15
Mach 16 16
Mach 17 17
Mach 18 18
Mach 19 19
Mach 20 20
Mach 21 21
Mach 22 22
Mach 23 23
Mach 24 24
Mach 25 25
Mach 26 26
Mach 27 27
Mach 28 28
Mach 29 29
Mach 30 30
Mach 31 31
Mach 32 32
Mach 33 33
Mach 34 34
Mach 35 35
Mach 36 36
Mach 37 37
Mach 38 38
Mach 39 39
Mach 40 40

More Mach Speed Conversions

Convert to Knots
Mach 1 is equal to 666.738661 knots
Convert to Speed Of Light
Mach 1 is equal to 1.1441E-6 speed of light
Convert to Miles Per Hour
Mach 1 is equal to 767.269148 miles per hour
Convert to Feet Per Second
Mach 1 is equal to 1,125.33 feet per second
Convert to Kilometers Per Second
Mach 1 is equal to 0.343 kilometers per second
Convert to Kilometers Per Hour
Mach 1 is equal to 1,234.8 kilometers per hour
Convert to Meters Per Second
Mach 1 is equal to 343 meters per second
Convert to Centimeters Per Second
Mach 1 is equal to 34,300 centimeters per second