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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) = 1236960000 Millimeter per Hour (mm/h).
| Mach (20°C, 1 atm) (Ma) | Millimeter per Hour (mm/h) |
|---|---|
| 0.001 | 1236960 |
| 0.01 | 12369600 |
| 0.1 | 123696000 |
| 0.5 | 618480000 |
| 1 | 1236960000 |
| 2 | 2473920000 |
| 5 | 6184800000 |
| 10 | 12369600000 |
| 15 | 18554400000 |
| 25 | 30924000000 |
| 50 | 61848000000 |
| 75 | 92772000000 |
| 100 | 123696000000 |
| 250 | 309240000000 |
| 500 | 618480000000 |
| 750 | 927720000000 |
| 1000 | 1.236960e+12 |




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