Feet per Second Conversion Calculator
Enter a value in feet per second below to convert to another unit of speed.
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Do you want to convert feet per second to miles per hour?
What Are Feet per Second?
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Feet per second are a measurement of speed.
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.
How Fast Is a Foot per Second?
Feet per second are a measurement of speed expressing the distance traveled in feet in one second.
How to Convert Feet per Second
To convert feet per second to another unit of speed, you need to multiply the value by a conversion factor. A conversion factor is a numerical value used to change the units of a measurement without changing the value.[2]
You can find the conversion factors for feet per second in the conversion table below.
Then, multiply the speed measurement by the conversion factor to find the equivalent value in the desired unit of measurement.
feet per second × conversion factor = result
You can also use a calculator, such as one of the converters below, for the conversion.
Feet per Second Conversion Table
| feet per second | knots | Mach number | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 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 sound | 0.000000020334 c | 13.636364 mph | 0.006096 km/s | 21.9456 km/h | 6.096 m/s | 609.6 cm/s |
Feet per Second Conversion Calculators
You can also convert speed using one of our feet per second converters below.
- feet per second to knots converter
- feet per second to Mach number converter
- feet per second to speed of sound converter
- feet per second to speed of light converter
- feet per second to miles per hour converter
- feet per second to kilometers per second converter
- feet per second to kilometers per hour converter
- feet per second to meters per second converter
- feet per second to centimeters per second converter
References
- 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
- National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion