Convert the speed of sound to feet per second

Explanation

From this page you can convert the speed of sound to feet per second (or Mach to fps) simply, by using the application above.

In case you are wondering, to convert from the speed of sound to feet per second you need to multiply by 1125.7862. This factor is calculated using the respective definitions of the two units you can find below.

Formula

1 Mach≈1125.7862 fps

speed of soundMach

dimension	speed
symbol	Mach

This unit represents the speed of sound in air at 20 °C.

Definition

The speed of sound varies with the medium the sound travels through.

Value

We use the speed of sound in air at 20 °C. With the approximation that air is an ideal gas the speed of sound only depends on the temperature as other parameters cancel out.

We use a formula adapted from this one to directly yield meters per second from a temperature in kelvin:

59620973180000 × ( T/273.15 )^0.5

Value in terms of the SI

The approximate value of the speed of sound is 343.14 meters per second.

Equivalences

The speed of sound is equivalent to:

Some Facts

The sound travels at 12000 m/s in diamond, almost 35 times faster than in air.
The Mach number is the ratio between the speed of an object in a medium and the speed of sound in the same medium. Therefore, Mach 1 is the speed of sound, and for example Mach 20 is 20 times the speed of sound (approximately 15 000 mph).

Related Conversions

feet per secondfps

dimension	speed
symbol	fps, ft/s

The foot per second (fps, ft/s) is a unit of speed.

Definition of the foot per second

One foot per second is equal to the speed of an object traveling one foot in a time of one second.

Value in terms of the SI

One foot per second is equivalent to 0.3048 meters per second.

Equivalences

One foot per second is also equivalent to:

Some Facts

The average speed for the world record 50 meters freestyle swim is 7.8 fps (2.4 m/s).

Other speeds

	second	minute	hour
inch	ips	ipmin	iph
foot	fps	fpmin	fph
yard	yps	ypmin	yph
mile	mps	mpmin	mph