Speed of Sound Calculator
Calculate the speed of sound in air based on temperature. Uses the approximation v = 331.3 + 0.606 × T (°C) for dry air. Also shows the speed of sound in common materials like water, steel, and glass.
Inputs
Results
Speed in Air
343.2 m/s
Speed (km/h)
1235.6 km/h
Speed (mph)
767.8 mph
Speed of Sound Results
| Parameter | Value |
|---|---|
| Temperature | 20°C (68.0°F, 293.15 K) |
| Speed in Air | 343.21 m/s |
| Speed in Air | 1235.6 km/h (767.8 mph) |
| Mach 1 at this temp | 343.21 m/s |
| Speed in Water (20°C) | 1,481 m/s |
| Speed in Steel | 5,960 m/s |
| Speed in Glass | 4,540 m/s |
| Speed in Wood (oak) | 3,850 m/s |
| Speed in Aluminum | 6,420 m/s |
| Formula | v = 331.3√(T_K / 273.15) |