Calculate Mach number - Pilot Calculator E6BJA (E6B / E6-B)

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Mach number calculator

How Mach number is calculated

Speed of sound

The speed of sound varies depending on the density of the medium (in this case air in the atmosphere) that it travels through. This air density is dependent on the altitude and temperature, which are input.

Mach number

Mach number is simply the ratio of the speed (input as knots, kph, mph) to the speed of sound as calculated above (for altitude and air temperature).