How to Calculate Mach Number

In order to calculate Mach number, you need to first calculate, the speed of sound in the fluid. To do that you can use these equations.

Mach number is V divided by A.

V, is the flow velocity.
A, is the speed of sound.
To calculate A you can use the equation A equals the square root of gamma, R, T.
Make sure to select the R that aligns with your desired units and to use absolute temperature.