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1 Knot to Feet per Second

1 knot is 1.69 feet per second. See the step-by-step breakdown and reference table below, or try a different value in the calculator.

1 kn = 1.69 ft/s
kn × 1.687808 = ft/s
Try: 2 kn to ft/s 6 kn to ft/s
1 kn is also
1 kn = 1.15 mph 1 kn = 1.85 km/h 1 kn = 0.5144 m/s
kn
1.69 ft/s

Formula and Step-by-Step

kn × 1.687808 = ft/s
  1. Start with 1 kn
  2. Multiply by 1.687808: 1 × 1.687808 = 1.69
  3. Result: 1 kn = 1.69 ft/s

Since 1 knot equals 1.687808 feet per second, multiply any knot value by 1.687808 to convert.

Other Knot to Foot per Second Values

Knots (kn) Feet per Second (ft/s)
1 kn 1.69 ft/s
2 kn 3.38 ft/s
5 kn 8.44 ft/s
10 kn 16.88 ft/s
15 kn 25.32 ft/s
20 kn 33.76 ft/s
25 kn 42.2 ft/s
50 kn 84.39 ft/s
75 kn 126.59 ft/s
100 kn 168.78 ft/s
250 kn 421.95 ft/s
500 kn 843.9 ft/s
1,000 kn 1,687.81 ft/s
calculate Knot to Foot per Second Converter swap_horiz Foot per Second to Knot Converter functions Knot to Foot per Second Formula speed All Speed Conversions

Frequently Asked Questions

1 knot equals 1.69 feet per second.
The formula is: kn × 1.687808 = ft/s. See the kn to ft/s formula page for worked examples.
Use the feet per second to knot converter. The reverse formula is: ft/s × 0.592484 = kn.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (kn × 1.687808 = ft/s) is based on internationally defined standards. Displayed results are rounded for readability, while the calculator uses the full-precision factor.
person Written by Sean Day verified Reviewed by UnitCompare update Last updated Mar 28, 2026