Convert Feet Per Second to Mach Number

Enter the speed in feet per second below to get the value converted to Mach number.

Results in Mach Number:
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1 ft/s = Mach 0.000889

How to Convert Feet Per Second to Mach Number

Speedometers are used in vehicles to measure speed

To convert a foot per second measurement to a Mach measurement, multiply the speed by the conversion ratio. One foot per second is equal to Mach 0.000889, so use this simple formula to convert:

Mach number = feet per second × 0.000889

The Mach number is equal to the speed in feet per second multiplied by 0.000889.

For example, here's how to convert 5 feet per second to Mach number using the formula above.
5 ft/s = (5 × 0.000889) = Mach 0.004443

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

Feet Per Second

Feet per second are a measurement of speed expressing the distance travelled 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.

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

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

Mach Number

Mach, sometimes also referred to as a Mach number, is the ratio of the speed of an object to the speed of sound.

Mach can be abbreviated as M, and is also sometimes abbreviated as Ma. For example, Mach 1 can be written as 1 M or 1 Ma.

Although Mach can be abbreviated M or Ma, the Mach number is typically expressed with the number after the unit name. For example, the expression Mach 3 is preferred rather than 3 Machs or 3 M.

The speed is classified as either subsonic, transonic, supersonic, or hypersonic depending on the Mach number.

Speed classifications for various mach numbers.
Speed Classification Mach Number
Subsonic Mach < 1.0
Transonic Mach = 1.0
Supersonic Mach > 1.0
Hypersonic Mach > 5.0

Foot Per Second Measurements and Equivalent Mach Conversions

Common foot per second values converted to the equivalent Mach value
Feet Per Second Mach Number
1 ft/s Mach 0.000889
2 ft/s Mach 0.001777
3 ft/s Mach 0.002666
4 ft/s Mach 0.003555
5 ft/s Mach 0.004443
6 ft/s Mach 0.005332
7 ft/s Mach 0.00622
8 ft/s Mach 0.007109
9 ft/s Mach 0.007998
10 ft/s Mach 0.008886
11 ft/s Mach 0.009775
12 ft/s Mach 0.010664
13 ft/s Mach 0.011552
14 ft/s Mach 0.012441
15 ft/s Mach 0.013329
16 ft/s Mach 0.014218
17 ft/s Mach 0.015107
18 ft/s Mach 0.015995
19 ft/s Mach 0.016884
20 ft/s Mach 0.017773
21 ft/s Mach 0.018661
22 ft/s Mach 0.01955
23 ft/s Mach 0.020438
24 ft/s Mach 0.021327
25 ft/s Mach 0.022216
26 ft/s Mach 0.023104
27 ft/s Mach 0.023993
28 ft/s Mach 0.024882
29 ft/s Mach 0.02577
30 ft/s Mach 0.026659
31 ft/s Mach 0.027548
32 ft/s Mach 0.028436
33 ft/s Mach 0.029325
34 ft/s Mach 0.030213
35 ft/s Mach 0.031102
36 ft/s Mach 0.031991
37 ft/s Mach 0.032879
38 ft/s Mach 0.033768
39 ft/s Mach 0.034657
40 ft/s Mach 0.035545

More Foot Per Second Speed Conversions

Convert to Knots
1 ft/s is equal to 0.592484 knots
Convert to Speed Of Sound
1 ft/s is equal to 0.000889 speed of sound
Convert to Speed Of Light
1 ft/s is equal to 1.0167E-9 speed of light
Convert to Miles Per Hour
1 ft/s is equal to 0.681818 miles per hour
Convert to Kilometers Per Second
1 ft/s is equal to 0.000305 kilometers per second
Convert to Kilometers Per Hour
1 ft/s is equal to 1.09728 kilometers per hour
Convert to Meters Per Second
1 ft/s is equal to 0.3048 meters per second
Convert to Centimeters Per Second
1 ft/s is equal to 30.48 centimeters per second