Knots to Feet Per Second Conversion

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

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Results in Feet Per Second:
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1 kn = 1.68781 ft/s

How to Convert Knots to Feet Per Second

Speedometers are used in vehicles to measure speed

To convert a knot measurement to a foot per second measurement, multiply the speed by the conversion ratio. One knot is equal to 1.68781 feet per second, so use this simple formula to convert:

feet per second = knots × 1.68781

The speed in feet per second is equal to the knots multiplied by 1.68781.

For example, here's how to convert 5 knots to feet per second using the formula above.
5 kn = (5 × 1.68781) = 8.439049 ft/s

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

Knots

One knot is equal to a speed of one nautical mile per hour,[1] or one minute of latitude per hour.

Knots can be abbreviated as kn, and are also sometimes abbreviated as kt. For example, 1 knot can be written as 1 kn or 1 kt.

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.

Knot to Foot Per Second Conversion Table

Knot measurements converted to feet per second
Knots Feet Per Second
1 kn 1.6878 ft/s
2 kn 3.3756 ft/s
3 kn 5.0634 ft/s
4 kn 6.7512 ft/s
5 kn 8.439 ft/s
6 kn 10.13 ft/s
7 kn 11.81 ft/s
8 kn 13.5 ft/s
9 kn 15.19 ft/s
10 kn 16.88 ft/s
11 kn 18.57 ft/s
12 kn 20.25 ft/s
13 kn 21.94 ft/s
14 kn 23.63 ft/s
15 kn 25.32 ft/s
16 kn 27 ft/s
17 kn 28.69 ft/s
18 kn 30.38 ft/s
19 kn 32.07 ft/s
20 kn 33.76 ft/s
21 kn 35.44 ft/s
22 kn 37.13 ft/s
23 kn 38.82 ft/s
24 kn 40.51 ft/s
25 kn 42.2 ft/s
26 kn 43.88 ft/s
27 kn 45.57 ft/s
28 kn 47.26 ft/s
29 kn 48.95 ft/s
30 kn 50.63 ft/s
31 kn 52.32 ft/s
32 kn 54.01 ft/s
33 kn 55.7 ft/s
34 kn 57.39 ft/s
35 kn 59.07 ft/s
36 kn 60.76 ft/s
37 kn 62.45 ft/s
38 kn 64.14 ft/s
39 kn 65.82 ft/s
40 kn 67.51 ft/s

References

  1. NASA, Knots Versus Miles per Hour, https://www.grc.nasa.gov/WWW/K-12/WindTunnel/Activities/knots_vs_mph.html