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Mach Number

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Calculate Mach number from airspeed and altitude, or calculate the airspeed for a given Mach number at a specific altitude.

Mach number
2.004
Supersonic flight regime
True airspeed
600.00 m/s
2,160.00 km/h ≈ 1,166.3 knots
Local speed of sound
299.46 m/s
1,078.06 km/h
Air temperature
-50.0°C
-58.0°F / 223.1 K

Mach wave geometry

Mach compares aircraft speed with the local speed of sound. Below Mach 1, pressure waves can move ahead; above Mach 1, they collapse into a trailing cone.

flight pathVμ

Aircraft speed

V = 600.0 m/s

Local sound speed

a = 299.5 m/s

Trailing Mach cone

Disturbances stay behind the aircraft.

Mach angle

μ = 29.9°

Regime map

M 2.00
00.813510

Wave behavior

Trailing Mach cone

Temperature model

ISA -50.0°C

Open Source and Easy to Use Elsewhere

This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.

Open source: review the implementation and see how the results are produced.

Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.