Convert Feet per second to Knots
One foot per second equals 0.592484 knots. Type any value to convert feet per second to knots instantly — with a full reference table below.
Convert Feet per second to Knots
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How to convert Feet per second to Knots
To convert feet per second to knots, multiply by 0.592484. One foot per second equals 0.592484 kn, and one knot equals 1.68781 ft/s.
- Take the value in feet per second — for example 7.5 ft/s.
- Multiply by 0.592484 (the number of knots in one foot per second).
- 7.5 × 0.592484 = 4.443629 kn.
Quick mental estimate: Divide the number of feet per second by 1.7 (within 0.7% of the exact answer).
Feet per second to Knots conversion table
| Feet per second | Knots |
|---|---|
| 1 ft/s | 0.592484 kn |
| 5 ft/s | 2.962419 kn |
| 10 ft/s | 5.924838 kn |
| 20 ft/s | 11.84968 kn |
| 25 ft/s | 14.8121 kn |
| 30 ft/s | 17.77451 kn |
| 40 ft/s | 23.69935 kn |
| 50 ft/s | 29.62419 kn |
| 60 ft/s | 35.54903 kn |
| 70 ft/s | 41.47387 kn |
| 80 ft/s | 47.3987 kn |
| 100 ft/s | 59.24838 kn |
| 120 ft/s | 71.09806 kn |
| Knots | Feet per second |
|---|---|
| 1 kn | 1.68781 ft/s |
| 5 kn | 8.439049 ft/s |
| 10 kn | 16.8781 ft/s |
| 20 kn | 33.7562 ft/s |
| 25 kn | 42.19525 ft/s |
| 30 kn | 50.6343 ft/s |
| 40 kn | 67.51239 ft/s |
| 50 kn | 84.39049 ft/s |
| 60 kn | 101.2686 ft/s |
| 70 kn | 118.1467 ft/s |
| 80 kn | 135.0248 ft/s |
| 100 kn | 168.781 ft/s |
| 120 kn | 202.5372 ft/s |
About converting Feet per second to Knots
Feet per second (ft/s) and Knots (kn) are both units of speed. The exact factor is 1 ft/s = 0.592484 kn, so multiply by 0.592484 to go from feet per second to knots (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Knots to Feet per second converter, or the full unit converter for every unit at once.
Real-world speed in feet per second and knots
| Example | Feet per second | Knots |
|---|---|---|
| A walking pace | ≈ 4.593176 ft/s | ≈ 2.721382 kn |
| Usain Bolt's top speed (2009) | ≈ 40.74803 ft/s | ≈ 24.14255 kn |
| The UK motorway limit (70 mph) | 102.6667 ft/s | 60.82834 kn |
| The German Autobahn advisory speed (130 km/h) | 118.4747 ft/s | 70.19436 kn |
| The speed of sound (air, 20 °C) | ≈ 1,125.328 ft/s | ≈ 666.7387 kn |
| An airliner at cruise | ≈ 820.21 ft/s | ≈ 485.9611 kn |
“≈” marks typical values; the rest are defined or measured figures.
The units
Feet per second — exactly 0.3048 m/s.
Used for: Ballistics, engineering and US sport analytics.
One nautical mile (1,852 m) per hour, about 0.5144 m/s.
Used for: Aviation, shipping and marine weather.
km/h, mph, ft/s and knots are all defined exactly in metres per second (a knot is one nautical mile, exactly 1,852 m, per hour).