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Mach (20°C, 1 atm) (Ma)
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31 conversions shown
To m/s (at 20°C): × 343.6. To km/h (at 20°C): × 1,237. Note: changes with altitude and temperature.
Mach = velocity ÷ speed_of_sound. At 20°C: Mach 1 = 343.6 m/s. Speed of sound = √(γRT/M) where γ = heat capacity ratio.
For example, 1 Mach (20°C, 1 atm) (Ma) = 0.0205748503 Cosmic Velocity - Third (v₃).
| Mach (20°C, 1 atm) (Ma) | Cosmic Velocity - Third (v₃) |
|---|---|
| 0.001 | 0.0000205748503 |
| 0.01 | 0.000205748503 |
| 0.1 | 0.00205748503 |
| 0.5 | 0.01028742515 |
| 1 | 0.0205748503 |
| 2 | 0.0411497006 |
| 5 | 0.1028742515 |
| 10 | 0.205748503 |
| 15 | 0.3086227545 |
| 25 | 0.5143712575 |
| 50 | 1.028742515 |
| 75 | 1.543113772 |
| 100 | 2.05748503 |
| 250 | 5.143712575 |
| 500 | 10.28742515 |
| 750 | 15.43113772 |
| 1000 | 20.5748503 |




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