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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) = 0.03067857143 Cosmic Velocity - Second (v₂).
| Mach (20°C, 1 atm) (Ma) | Cosmic Velocity - Second (v₂) |
|---|---|
| 0.001 | 0.00003067857143 |
| 0.01 | 0.0003067857143 |
| 0.1 | 0.003067857143 |
| 0.5 | 0.01533928571 |
| 1 | 0.03067857143 |
| 2 | 0.06135714286 |
| 5 | 0.1533928571 |
| 10 | 0.3067857143 |
| 15 | 0.4601785714 |
| 25 | 0.7669642857 |
| 50 | 1.533928571 |
| 75 | 2.300892857 |
| 100 | 3.067857143 |
| 250 | 7.669642857 |
| 500 | 15.33928571 |
| 750 | 23.00892857 |
| 1000 | 30.67857143 |




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