Knot to Feet per Second Converter
Speed · unit-converter
Convert Knot to Feet per Second with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through meters per second with fixed definitions (knot, international mile, Mach 1 = ISA sea level, Beaufort WMO bands at 10 m, vacuum c, plus linear SI and imperial rate units like km/s, fpm, ips, cm/s, and mm/s).
About Knot
The knot is one nautical mile per hour (1852 m/h). It is standard in maritime and aviation navigation.
About Feet per Second
Feet per second appears in ballistics, engineering, and some US sports contexts; it relates to imperial length per second.
How to convert knots to feet per second
1 knot equals 1.6878098571011957 feet per second in this tool (via m/s):
1 knots = (0.5144444444444445 m/s ÷ 0.3048 m/s) fps = 1.6878098571011957 fps
Each knot carries 0.5144444444444445 m/s and each feet per second 0.3048 m/s, so one knots equals 0.5144444444444445 ÷ 0.3048 fps.
Let v(knots) be the numeric speed in Knot (knots), and v(fps) in Feet per Second (fps). Then:
v(fps) = v(knots) × (0.5144444444444445 / 0.3048)
Equivalently, divide by how many knots fit into one fps (m/s per fps divided by m/s per knots):
v(fps) = v(knots) ÷ 0.5924838012958963
Examples
Example #1: Convert 10 knots to feet per second
10 knots = 10 knots × (0.5144444444444445/0.3048) fps = 16.878098571 fps
10 knots = 10 knots ÷ 0.5924838012958963 = 16.878098571 fps
Example #2: Convert 50 knots to feet per second
50 knots = 50 knots × (0.5144444444444445/0.3048) fps = 84.3904928551 fps
50 knots = 50 knots ÷ 0.5924838012958963 = 84.3904928551 fps
Summary
To convert Knot to Feet per Second, multiply the value in knots by (0.5144444444444445 m/s per knots) / (0.3048 m/s per fps). Equivalently: value_fps = value_knots × (0.5144444444444445 / 0.3048). Numerically, 1 knots equals 1.6878098571011957 fps.
Relationship context
Both Knot and Feet per Second are expressed as fixed multiples of meters per second in this tool. Converting multiplies by the ratio of m/s per knots to m/s per fps, so results stay consistent with SI-based definitions (international mile, knot, feet, etc.).
Conversion tables
| Knot (knots) | Feet per Second (fps) |
|---|---|
| 0.1 | 0.1687809857 |
| 1 | 1.6878098571 |
| 2 | 3.3756197142 |
| 3 | 5.0634295713 |
| 4 | 6.7512394284 |
| 5 | 8.4390492855 |
| 6 | 10.1268591426 |
| 7 | 11.8146689997 |
| 8 | 13.5024788568 |
| 9 | 15.1902887139 |
| Knot (knots) | Feet per Second (fps) |
|---|---|
| 10 | 16.878098571 |
| 20 | 33.756197142 |
| 30 | 50.634295713 |
| 40 | 67.512394284 |
| 50 | 84.3904928551 |
| 60 | 101.268591426 |
| 70 | 118.146689997 |
| 80 | 135.024788568 |
| 90 | 151.902887139 |
| 100 | 168.78098571 |