Convert Knot (kn) to Foot per Sec (ft/s) instantly. Enter any value — result updates live.
Converting Knot to Foot per Sec is a common speed conversion. One knot (kn) equals 1.68781 foot per sec (ft/s). Knots are the standard speed unit in maritime and aviation worldwide.
This conversion is commonly needed for physics and engineering calculations, driving and speed limit compliance, running and fitness tracking. Feet per second are used in ballistics, engineering, and some US speed calculations.
To put knot in perspective: a Category 1 hurricane (64–82 kn). In foot per sec, common references include a fast elevator (about 20 ft/s).
The term 'knot' originated from counting knots on a rope trailing behind a ship over a fixed time period.
Feet per second is commonly used in ballistics to describe projectile muzzle velocity, giving more intuitively sized numbers than meters per second for that range of speeds.
People frequently convert between knot and foot per sec for:
| Knot (kn) | Foot per Sec (ft/s) |
|---|---|
| 1 kn | 1.68781 ft/s |
| 2 kn | 3.37562 ft/s |
| 5 kn | 8.43904 ft/s |
| 10 kn | 16.8781 ft/s |
| 15 kn | 25.3171 ft/s |
| 20 kn | 33.7562 ft/s |
| 25 kn | 42.1952 ft/s |
| 30 kn | 50.6343 ft/s |
| 50 kn | 84.3904 ft/s |
| 100 kn | 168.8 ft/s |
| 200 kn | 337.6 ft/s |
| 500 kn | 843.9 ft/s |
| 1000 kn | 1,688 ft/s |