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Speed of Sound in Gases
Acoustic velocity in different gases
The speed of sound (acoustic velocity) depends on the density and the bulk modulus elasticity of a gas.
Here is a list of speeds of sound for some gases at atmospheric pressure.
You can also calculate the speed of sound here based on the gas properties of your application.
| Gas | ft/s | m/s |
|---|---|---|
| Acetaldehyde | 912 ft/s | 278 m/s |
| Acetylene | 1079 ft/s | 329 m/s |
| Air | 1086 ft/s | 331 m/s |
| Air, 20ºC | 1125 ft/s | 343 m/s |
| Ammonia (30ºC) | 1443 ft/s | 440 m/s |
| Argon (27ºC) | 1059 ft/s | 323 m/s |
| Benzene (90ºC) | 656 ft/s | 200 m/s |
| Bromine (58ºC) | 489 ft/s | 149 m/s |
| Carbon dioxide (0ºC) | 846 ft/s | 258 m/s |
| Carbon dioxide (51ºC) | 918 ft/s | 280 m/s |
| Carbon disulfide (35ºC) | 676 ft/s | 206 m/s |
| Carbon monoxide (0ºC) | 1105 ft/s | 337 m/s |
| Carbon tetrachloride (22ºC) | 436 ft/s | 133 m/s |
| Chlorine (0ºC) | 672 ft/s | 205 m/s |
| Chlorodifluoromethane R22 (17ºC) | 587 ft/s | 179 m/s |
| Chloroform (22ºC) | 505 ft/s | 154 m/s |
| Cyclohexan (30ºC) | 594 ft/s | 181 m/s |
| Deuterium (0ºC) | 2913 ft/s | 888 m/s |
| Dichlorodifluoromethane R12 (17ºC) | 459 ft/s | 140 m/s |
| Diethyl ether (40ºC) | 613 ft/s | 187 m/s |
| Ethane (31ºC) | 1036 ft/s | 316 m/s |
| Ethylene (20ºC) | 1073 ft/s | 327 m/s |
| Fluorine (102ºC) | 1089 ft/s | 332 m/s |
| Helium (0ºC) | 3191 ft/s | 973 m/s |
| Hydrogen (27ºC) | 4330 ft/s | 1320 m/s |
| Hydrogen bromide (0ºC) | 656 ft/s | 200 m/s |
| Hydrogen chloride (0ºC) | 964 ft/s | 294 m/s |
| Hydrogen iodide (0ºC) | 515 ft/s | 157 m/s |
| Hydrogen sulfide (0ºC) | 968 ft/s | 295 m/s |
| Hydrogen sulfide (24ºC) | 1014 ft/s | 309 m/s |
| Krypton (30ºC) | 735 ft/s | 224 m/s |
| Methane (27ºC) | 1476 ft/s | 450 m/s |
| Methane (41ºC) | 1528 ft/s | 466 m/s |
| Neon (0ºC) | 1420 ft/s | 433 m/s |
| Neon (30ºC) | 1512 ft/s | 461 m/s |
| Nitric oxide (16ºC) | 1096 ft/s | 334 m/s |
| Nitrogen (29ºC) | 1162 ft/s | 354.4 m/s |
| Nitrous oxide (0ºC) | 840 ft/s | 256 m/s |
| Nitrous oxide (25ºC) | 879 ft/s | 268 m/s |
| Oxygen (27ºC) | 1082 ft/s | 330 m/s |
| Oxygen (30ºC) | 1090 ft/s | 332.2 m/s |
| Sulfur dioxide (0ºC) | 686 ft/s | 209 m/s |
| Sulfur hexafluoride (11ºC) | 436 ft/s | 133 m/s |
| 1,1,2-trichloro-1,2,2-trifluoroethane R113 (53ºC) | 407 ft/s | 124 m/s |
| Trichlorofluoromethane R11 (18ºC) | 469 ft/s | 143 m/s |
| Water vapor steam (100ºC) | 1566 ft/s | 477.5 m/s |
| Water vapour steam 6 MPa (350ºC) | 1873 ft/s | 571 m/s |
Disclaimer: Information provided on this website is intended for educational use only.
Source and more information: The Engineering Toolbox
Related Pages
Pipe Lengths to Avoid Calculator • Webinar: Feeling the pulse • Tools • Helmholtz Calculator • Pulsation analysis – ask the expert • Pulsation & Mechanical Analysis: Reciprocating Compressor •
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