Mach Number

Calculate the Mach Number, a dimensionless value useful for analyzing fluid flow dynamics problems where compressibility is significant. Determine if flow is subsonic, transonic, supersonic, or hypersonic.

Calculator

Inputs

Fluid Flow Speed (v) (m/s)

Speed of Sound (c) (m/s)

Results

Mach Number (M)--

Cauchy Number (C)--

Calculator

Inputs

Fluid Flow Speed (v) (m/s)

Fluid Density (ρ) (kg/m³)

Bulk Modulus Elasticity (E) (Pa)

Results

Mach Number (M)--

Mach Number Range	Flow Type	Description
< 1	Subsonic	Flow speed is lower than the speed of sound
~ 1	Transonic	Flow speed is approximately equal to the speed of sound
> 1	Supersonic	Flow speed is higher than the speed of sound
>> 1	Hypersonic	Flow speed is much higher than the speed of sound