Knots to Feet per Second Converter
kn → ft/s · 🚀 Speed
1 Knots = 1.6878099 Feet per Second
How to convert Knots to Feet per Second
To convert Knots to Feet per Second, multiply the value in Knots by 1.6878099. For example, 5 kn = 8.4390493 ft/s.
Going from Knots to Feet per Second means applying a fixed conversion factor: one Knots (kn) is exactly 1.6878099 Feet per Second (ft/s). Type any number into the converter above and the equivalent updates instantly, or use the reference table for quick lookups.
Speed conversions are used in driving, sports, aviation, weather, and physics. The most common need is converting between kilometers per hour and miles per hour when traveling between countries.
Understanding Knots and Feet per Second
Most of the world posts speed limits in kilometers per hour, while the US and UK use miles per hour. Meters per second is the scientific standard, and knots (nautical miles per hour) are used in aviation and maritime navigation. A car at 100 km/h is traveling about 62 mph — a conversion worth knowing for any international driver.
How accurate is this conversion?
Speed conversions are exact because they derive directly from exact length and time definitions. Since 1 mile = 1.609344 kilometers exactly, all speed conversions between these units are precise.
All conversion factors on ClearUnits are based on internationally recognised standards (the International System of Units, SI, and official definitions). Factors are reviewed for accuracy and the calculator uses full-precision values, rounding only the displayed result.
Quick reference: common Knots to Feet per Second values
The most frequently searched conversions are 1 Knots = 1.6878099 Feet per Second, 5 Knots = 8.4390493 Feet per Second, 10 Knots = 16.878099 Feet per Second, and 100 Knots = 168.78099 Feet per Second. The full table further down covers every common value, and the calculator handles any number you need in between.
Pro tip: For a quick km/h to mph estimate while driving abroad, multiply by 0.6. So 50 km/h ≈ 30 mph, 80 km/h ≈ 48 mph, 120 km/h ≈ 72 mph — close enough to stay safe and legal.
Knots to Feet per Second — Conversion Table
| Knots (kn) | Feet per Second (ft/s) |
|---|---|
| 0.1 kn | 0.16878099 ft/s |
| 0.25 kn | 0.42195246 ft/s |
| 0.5 kn | 0.84390493 ft/s |
| 1 kn | 1.6878099 ft/s |
| 2 kn | 3.3756197 ft/s |
| 5 kn | 8.4390493 ft/s |
| 10 kn | 16.878099 ft/s |
| 25 kn | 42.195246 ft/s |
| 50 kn | 84.390493 ft/s |
| 100 kn | 168.78099 ft/s |
| 250 kn | 421.95246 ft/s |
| 500 kn | 843.90493 ft/s |
| 1000 kn | 1,687.81 ft/s |