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Speed of Sound

What is the speed of sound in air?

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August 14, 2017 6:04AM

The speed of sound is dependent on the temperature and not on the air pressure. At 20 degrees Celsius or 68 degrees Fahrenheit the speed of sound is 343 m/s or 1236.3 km/h or 1126.7 ft/s or 667.1 knots.

Scroll down to related links and look at "Speed of sound - temperature matters, not air pressure".

At room temperature (20°C, 68° F) the speed of sound is 343 meters per second, 767 miles per hour, or 0.213 miles per second.

Sound waves must have matter and/or molecules to travel. Where there is no matter, such as in outer space, sound cannot travel.


At room temperature (20°C, 68° F) the speed of sound is 343 meters per second, 767 miles per hour, or 0.213 miles per second.

Sound waves must have matter and/or molecules to travel. Where there is no matter, such as in outer space, sound cannot travel.


At 20 degrees Celsius the sound travels in air 343.4 meters per second. That means in 1 second the sound travels 343.3 meters. In 2.912 milliseconds the sound travels 1 meter.
Well it is really dependent on the temperature of the air, but in this case we will assume the standard temperature ( 20 degrees C) it travels at 343 meters per second.
Through air, sound waves travel at 343 m/s