Mach Number Calculator

Calculate the Mach number of an object, which is the ratio of its speed to the speed of sound in the surrounding medium. This determines its flight regime (subsonic, supersonic, etc.).

Mach Number Calculator

Standard speed of sound in dry air at 20°C is ~343 m/s.

How to Use

  1. 1

    Enter Object Speed

    Input the speed of the aircraft or object in meters per second (m/s).

  2. 2

    Enter Speed of Sound

    Input the local speed of sound in m/s. For standard dry air at 20°C (68°F), it's about 343 m/s.

  3. 3

    Calculate

    Click calculate to view the Mach number and see the classification of the flight regime.

Frequently Asked Questions

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