Feet per Second to Speed of Sound Converter

Enter the speed in feet per second below to get the value converted to speed of sound.


Result in Speed of Sound:

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1 ft/s = 0.000889 sound

Do you want to convert speed of sound to feet per second?

How to Convert Feet per Second to Speed of Sound

To convert a measurement in feet per second to a measurement in speed of sound, multiply the speed by the following conversion ratio: 0.000889 speed of sound/foot per second.

Since one foot per second is equal to 0.000889 speed of sound, you can use this simple formula to convert:

speed of sound = feet per second × 0.000889

The speed in speed of sound is equal to the speed in feet per second multiplied by 0.000889.

For example, here's how to convert 5,000 feet per second to speed of sound using the formula above.
speed of sound = (5,000 ft/s × 0.000889) = 4.443149 sound

Feet per second and speed of sound are both units used to measure speed. Keep reading to learn more about each unit of measure.

What Are Feet per Second?

Feet per second are a measurement of speed expressing the distance traveled in feet in one second.

The foot per second is a US customary and imperial unit of speed. Feet per second can be abbreviated as ft/s, and are also sometimes abbreviated as ft/sec or fps. For example, 1 foot per second can be written as 1 ft/s, 1 ft/sec, or 1 fps.

In the expressions of units, the slash, or solidus (/), is used to express a change in one or more units relative to a change in one or more other units.[1] For example, ft/s is expressing a change in length or distance relative to a change in time.

Feet per second can be expressed using the formula:
vft/s = dft / tsec

The velocity in feet per second is equal to the distance in feet divided by time in seconds.

Learn more about feet per second.

What Is the Speed of Sound?

The speed of sound is the distance a sound wave travels through an elastic medium. The speed of sound through air at 20 °C is equal to 343 meters per second,[2] or roughly 767 miles per hour.

Speed of sound can be abbreviated as sound; for example, 1 speed of sound can be written as 1 sound.

Learn more about the speed of sound.

Foot per Second to Speed of Sound Conversion Table

Table showing various foot per second measurements converted to speed of sound.
Feet Per Second Speed Of Sound
1 ft/s 0.000889 sound
2 ft/s 0.001777 sound
3 ft/s 0.002666 sound
4 ft/s 0.003555 sound
5 ft/s 0.004443 sound
6 ft/s 0.005332 sound
7 ft/s 0.00622 sound
8 ft/s 0.007109 sound
9 ft/s 0.007998 sound
10 ft/s 0.008886 sound
20 ft/s 0.017773 sound
30 ft/s 0.026659 sound
40 ft/s 0.035545 sound
50 ft/s 0.044431 sound
60 ft/s 0.053318 sound
70 ft/s 0.062204 sound
80 ft/s 0.07109 sound
90 ft/s 0.079977 sound
100 ft/s 0.088863 sound
200 ft/s 0.177726 sound
300 ft/s 0.266589 sound
400 ft/s 0.355452 sound
500 ft/s 0.444315 sound
600 ft/s 0.533178 sound
700 ft/s 0.622041 sound
800 ft/s 0.710904 sound
900 ft/s 0.799767 sound
1,000 ft/s 0.88863 sound
2,000 ft/s 1.7773 sound
3,000 ft/s 2.6659 sound
4,000 ft/s 3.5545 sound
5,000 ft/s 4.4431 sound
6,000 ft/s 5.3318 sound
7,000 ft/s 6.2204 sound
8,000 ft/s 7.109 sound
9,000 ft/s 7.9977 sound
10,000 ft/s 8.8863 sound


  1. National Institute of Standards and Technology, NIST Guide to the SI, Chapter 6: Rules and Style Conventions for Printing and Using Units, https://www.nist.gov/pml/special-publication-811/nist-guide-si-chapter-6-rules-and-style-conventions-printing-and-using
  2. CK-12, Speed of Sound, https://www.ck12.org/physics/speed-of-sound/lesson/Speed-of-Sound-MS-PS/

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