Speed of Sound in Air at Different Temperatures
The speed of sound in air is approximately 343 meters per second (m/s) or 1,125 feet per second (ft/s) at room temperature (around 20 °C or 68 °F). However, the speed of sound can vary with changes in temperature, humidity, and air composition.
The following charts and table provide comprehensive data on the speed of sound in air at different temperature values.
Click on the icon to switch between SI (m/s) and US customary (ft/s) units.
| Temperature (°C) | Sound speed (m/s) |
|---|---|
| -50 | 299.4 |
| -40 | 306.1 |
| -30 | 312.6 |
| -20 | 318.9 |
| -10 | 325.2 |
| 0 | 331.3 |
| 10 | 337.3 |
| 20 | 343.2 |
| 30 | 349.0 |
| 40 | 354.7 |
| 50 | 360.3 |
| 60 | 365.9 |
| 70 | 371.3 |
| 80 | 376.7 |
| 90 | 382.0 |
| 100 | 387.2 |
| 110 | 392.4 |
| 120 | 397.5 |
| 130 | 402.5 |
| 140 | 407.5 |
| 150 | 412.4 |
| 160 | 417.2 |
| 170 | 422.0 |
| 180 | 426.7 |
| 190 | 431.4 |
| 200 | 436.0 |
| 210 | 440.6 |
| 220 | 445.2 |
| 230 | 449.6 |
| 240 | 454.1 |
| 250 | 458.5 |
| 260 | 462.9 |
| 270 | 467.2 |
| 280 | 471.5 |
| 290 | 475.7 |
| 300 | 479.9 |
| 310 | 484.1 |
| 320 | 488.2 |
| 330 | 492.3 |
| 340 | 496.4 |
| 350 | 500.4 |
| 360 | 504.4 |
| 370 | 508.4 |
| 380 | 512.3 |
| 390 | 516.2 |
| 400 | 520.1 |
Related Tables
References: 1) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016. 2) William Moebs, Samuel J. Ling, Jeff Sanny. “University Physics Volume 1. 17.2 Speed of Sound.” OpenStax.