Feet Per Second Conversion

Speedometers are used in vehicles to measure speed

The foot per second is a unit used to measure speed. Use one of the conversion calculators below to convert to another unit of measure, or read on to learn more about feet per second.

Foot Per Second Conversion Calculators

Choose a unit of speed to convert to.

Convert feet per second to knots
1 foot per second is equal to 0.592484 knots
Convert feet per second to Mach
1 foot per second is equal to 0.000889 Mach
Convert feet per second to speed of sound
1 foot per second is equal to 0.000889 speed of sound
Convert feet per second to speed of light
1 foot per second is equal to 1.0167E-9 speed of light
Convert feet per second to miles per hour
1 foot per second is equal to 0.681818 miles per hour
Convert feet per second to kilometers per second
1 foot per second is equal to 0.000305 kilometers per second
Convert feet per second to kilometers per hour
1 foot per second is equal to 1.09728 kilometers per hour
Convert feet per second to meters per second
1 foot per second is equal to 0.3048 meters per second
Convert feet per second to centimeters per second
1 foot per second is equal to 30.48 centimeters per second

Foot Per Second Definition and Usage

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.

Feet Per Second Measurement Conversion Table

Common foot per second values and equivalent imperial and metric speed measurements
feet per second knots Mach speed of sound speed of light miles per hour kilometers per second kilometers per hour meters per second centimeters per second
1 ft/s 0.592484 kn Mach 0.000889 0.000889 0.0000000010167 c 0.681818 mph 0.000305 km/s 1.09728 km/h 0.3048 m/s 30.48 cm/s
2 ft/s 1.184968 kn Mach 0.001777 0.001777 0.0000000020334 c 1.363636 mph 0.00061 km/s 2.19456 km/h 0.6096 m/s 60.96 cm/s
3 ft/s 1.777451 kn Mach 0.002666 0.002666 0.0000000030501 c 2.045455 mph 0.000914 km/s 3.29184 km/h 0.9144 m/s 91.44 cm/s
4 ft/s 2.369935 kn Mach 0.003555 0.003555 0.0000000040668 c 2.727273 mph 0.001219 km/s 4.38912 km/h 1.2192 m/s 121.92 cm/s
5 ft/s 2.962419 kn Mach 0.004443 0.004443 0.0000000050835 c 3.409091 mph 0.001524 km/s 5.4864 km/h 1.524 m/s 152.4 cm/s
6 ft/s 3.554903 kn Mach 0.005332 0.005332 0.0000000061002 c 4.090909 mph 0.001829 km/s 6.58368 km/h 1.8288 m/s 182.88 cm/s
7 ft/s 4.147387 kn Mach 0.00622 0.00622 0.0000000071169 c 4.772727 mph 0.002134 km/s 7.68096 km/h 2.1336 m/s 213.36 cm/s
8 ft/s 4.73987 kn Mach 0.007109 0.007109 0.0000000081336 c 5.454545 mph 0.002438 km/s 8.77824 km/h 2.4384 m/s 243.84 cm/s
9 ft/s 5.332354 kn Mach 0.007998 0.007998 0.0000000091503 c 6.136364 mph 0.002743 km/s 9.87552 km/h 2.7432 m/s 274.32 cm/s
10 ft/s 5.924838 kn Mach 0.008886 0.008886 0.000000010167 c 6.818182 mph 0.003048 km/s 10.9728 km/h 3.048 m/s 304.8 cm/s
11 ft/s 6.517322 kn Mach 0.009775 0.009775 0.000000011184 c 7.5 mph 0.003353 km/s 12.07008 km/h 3.3528 m/s 335.28 cm/s
12 ft/s 7.109806 kn Mach 0.010664 0.010664 0.0000000122 c 8.181818 mph 0.003658 km/s 13.16736 km/h 3.6576 m/s 365.76 cm/s
13 ft/s 7.702289 kn Mach 0.011552 0.011552 0.000000013217 c 8.863636 mph 0.003962 km/s 14.26464 km/h 3.9624 m/s 396.24 cm/s
14 ft/s 8.294773 kn Mach 0.012441 0.012441 0.000000014234 c 9.545455 mph 0.004267 km/s 15.36192 km/h 4.2672 m/s 426.72 cm/s
15 ft/s 8.887257 kn Mach 0.013329 0.013329 0.000000015251 c 10.227273 mph 0.004572 km/s 16.4592 km/h 4.572 m/s 457.2 cm/s
16 ft/s 9.479741 kn Mach 0.014218 0.014218 0.000000016267 c 10.909091 mph 0.004877 km/s 17.55648 km/h 4.8768 m/s 487.68 cm/s
17 ft/s 10.072225 kn Mach 0.015107 0.015107 0.000000017284 c 11.590909 mph 0.005182 km/s 18.65376 km/h 5.1816 m/s 518.16 cm/s
18 ft/s 10.664708 kn Mach 0.015995 0.015995 0.000000018301 c 12.272727 mph 0.005486 km/s 19.75104 km/h 5.4864 m/s 548.64 cm/s
19 ft/s 11.257192 kn Mach 0.016884 0.016884 0.000000019317 c 12.954545 mph 0.005791 km/s 20.84832 km/h 5.7912 m/s 579.12 cm/s
20 ft/s 11.849676 kn Mach 0.017773 0.017773 0.000000020334 c 13.636364 mph 0.006096 km/s 21.9456 km/h 6.096 m/s 609.6 cm/s