Convert Knots to feet per second

1 knot = 1.6878 feet per second · ft/s = kn × 1.687809857

kn
Feet per second
1.6878ft/s

1 knot = 1.6878 feet per second

When you need this conversion

This conversion goes from knots, the navigation speed unit for aviation and sailing, to feet per second, used in ballistics and US engineering. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.

Knots to feet per second conversion table

Conversion table from knots to feet per second
Knots (kn)Feet per second (ft/s)
1 kn1.6878 ft/s
2 kn3.3756 ft/s
3 kn5.0634 ft/s
5 kn8.439 ft/s
10 kn16.8781 ft/s
15 kn25.3171 ft/s
20 kn33.7562 ft/s
25 kn42.1952 ft/s
50 kn84.3905 ft/s
75 kn126.59 ft/s
100 kn168.78 ft/s
250 kn421.95 ft/s
500 kn843.9 ft/s
1,000 kn1,687.81 ft/s

The formula

ft/s = kn × 1.687809857

Because both units measure speed, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.

Convert the other way

Feet per second to knots

Related speed conversions

All speed conversions →

Frequently asked questions

How many feet per second are in a knot?
There are 1.6878 feet per second in 1 knot. The formula is ft/s = kn × 1.687809857.
How do you convert knots to feet per second?
Use the formula ft/s = kn × 1.687809857. For example, 10 knots equals 16.8781 feet per second.
Is the knots to feet per second conversion exact?
Yes. Knots and feet per second are both units of speed, related by an exact defined factor. Displayed results are rounded for readability.
What is kn short for?
kn is the standard symbol for knot. ft/s is the symbol for foot per second.