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9 Feet per Second to Knots

9 feet per second equals 5.33 knots. Use the formula, worked example, and conversion table below to check the math.

9 ft/s = 5.33 kn
ft/s × 0.592484 = kn
Try: 4 ft/s to kn 8 ft/s to kn 10 ft/s to kn 14 ft/s to kn
9 ft/s is also
9 ft/s = 6.14 mph 9 ft/s = 9.88 km/h 9 ft/s = 2.74 m/s
ft/s
5.33 kn

Step-by-Step Calculation

ft/s × 0.592484 = kn
  1. Start with 9 ft/s
  2. Multiply by 0.592484: 9 × 0.592484 = 5.33
  3. Result: 9 ft/s = 5.33 kn

This conversion factor (0.592484) is the same for every foot per second to knot calculation.

Foot per Second to Knot Conversion Table

Feet per Second (ft/s) Knots (kn)
1 ft/s 0.5925 kn
2 ft/s 1.18 kn
5 ft/s 2.96 kn
9 ft/s 5.33 kn
10 ft/s 5.92 kn
15 ft/s 8.89 kn
20 ft/s 11.85 kn
25 ft/s 14.81 kn
50 ft/s 29.62 kn
75 ft/s 44.44 kn
100 ft/s 59.25 kn
250 ft/s 148.12 kn
500 ft/s 296.24 kn
1,000 ft/s 592.48 kn
calculate Foot per Second to Knot Converter swap_horiz Knot to Foot per Second Converter functions Foot per Second to Knot Formula speed All Speed Conversions

Frequently Asked Questions

9 feet per second equals 5.33 knots.
The formula is: ft/s × 0.592484 = kn. See the ft/s to kn formula page for worked examples.
Use the knots to feet per second converter. The reverse formula is: kn × 1.687808 = ft/s.
The calculator uses the full-precision conversion factor for accuracy. Table values and displayed results are rounded for readability.
The conversion formula (ft/s × 0.592484 = kn) 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