Speed of Sound Calculator
Temperature (°C)
Medium
✓Speed
m/s
343.2
km/h
1235.6
mph
767.8
The speed of sound depends on the medium and temperature. In dry air at 20°C it is approximately 343 m/s. It is much faster in water and steel.
- 1Speed in air = 331.3 × √(1 + T°C/273.15) m/s
- 2Increases ~0.6 m/s per °C in air
- 3In water at 20°C: ~1,482 m/s
- 4In steel: ~5,960 m/s
Air temperature 30°C=Speed = 331.3 × √(303.15/273.15) = 349 m/s = 1,256 km/h
| Medium | m/s | km/h |
|---|---|---|
| Air at 0°C | 331 | 1,192 |
| Air at 20°C | 343 | 1,235 |
| Air at 40°C | 355 | 1,278 |
| Seawater | ~1,530 | 5,508 |
| Steel | 5,960 | 21,456 |
References
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