Mach to Meters per Second
( M → m/s )
Instantly convert Mach (speed of sound ratio) to meters per second. Enter any value below and get an accurate result with the full formula and reference table.
How to Convert Mach to Meters per Second
To convert Mach to meters per second, multiply the number of Mach by 340.29. This is the speed of sound at sea level in dry air at 20°C.
Step-by-Step Example
Let’s convert Mach 2 to meters per second:
1. Multiply by 340.29: 2 × 340.29 = 680.58
2. So Mach 2 equals 680.58 m/s.
For a smaller amount, Mach 0.5 × 340.29 = 170.145 m/s.
Speed Regimes & Mach Numbers
Mach numbers describe different flight regimes :
- Subsonic: Below Mach 0.8 (most general aviation)
- Transonic: Mach 0.8–1.2 (commercial jets cruise here)
- Supersonic: Mach 1.2–5.0 (military jets, Concorde)
- Hypersonic: Above Mach 5.0 (space vehicles)
When You’d Use Each Unit
Mach numbers are used in aviation and aerospace to express speed relative to the speed of sound, which varies with altitude and temperature. Meters per second are the standard unit for speed in science, engineering, and physics worldwide. Converting between them is essential for aeronautical engineering, flight planning, and understanding aircraft performance.
Common Mach values converted to meters per second — typical values highlighted.
| Mach | m/s | Approximate |
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