Mach Number Given By Specific Gas Constant Calculator

The Mach number ($M$) is a dimensionless quantity used in fluid dynamics to represent the ratio of the speed of an object to the speed of sound in the surrounding medium. In subsonic flow (where M<1), the velocity of the object is lower than the speed of sound, while in supersonic flow (where M>1), the velocity exceeds the speed of sound. The formula to calculate Mach number (M) is as follows:

Where:

• V is Velocity in m/s,
• $\gamma$ is the adiabatic index or ratio of specific heats for air (approximately 1.4),
• $R$ is the specific gas constant for air (approximately 287 J/(kg·K)),
• $T$ is the temperature in Kelvin.