Mach Number Calculator

Determine the Mach number based on object speed and the speed of sound.

Parameters

Object Velocity (v)

Speed of Sound (c)

Results

Enter velocity and speed of sound to calculate

Overview

The Mach number is a dimensionless quantity representing the ratio of flow velocity past a boundary to the local speed of sound.

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Pro Tips

Fun Facts

"The term 'Mach number' was proposed by aeronautical engineer Jakob Ackeret in 1929, named after physicist Ernst Mach."
"The speed of light is about Mach 873,768 in air at sea level."
"When an object breaks the sound barrier (Mach 1), it creates a sonic boom."
"The fastest manned aircraft, the North American X-15, reached Mach 6.7."

Formula: M = v / c

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