How to convert knots to feet per second
ft/s = kn × 1.687809857Multiply the value in knots by 1.687809857. To go the other way, multiply by 0.5924838013 (or divide by 1.687809857).
A knot is larger than a foot per second: one knot contains 1.687809857 feet per second.
Worked examples
- 1 knot1 kn × 1.687809857 = 1.687809857 ft/s
- 5 knots5 kn × 1.687809857 = 8.439049286 ft/s
- 10 knots10 kn × 1.687809857 = 16.87809857 ft/s
- 20 knots20 kn × 1.687809857 = 33.75619714 ft/s
- 100 knots100 kn × 1.687809857 = 168.7809857 ft/s
Knots to feet per second conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| 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 |
| 3 kn | 5.0634296 ft/s |
| 4 kn | 6.7512394 ft/s |
| 5 kn | 8.4390493 ft/s |
| 6 kn | 10.126859 ft/s |
| 7 kn | 11.814669 ft/s |
| 8 kn | 13.502479 ft/s |
| 9 kn | 15.190289 ft/s |
| 10 kn | 16.878099 ft/s |
| Knots (kn) | Feet per second (ft/s) |
|---|---|
| 12 kn | 20.253718 ft/s |
| 15 kn | 25.317148 ft/s |
| 20 kn | 33.756197 ft/s |
| 25 kn | 42.195246 ft/s |
| 30 kn | 50.634296 ft/s |
| 40 kn | 67.512394 ft/s |
| 50 kn | 84.390493 ft/s |
| 75 kn | 126.58574 ft/s |
| 100 kn | 168.78099 ft/s |
| 250 kn | 421.95246 ft/s |
| 500 kn | 843.90493 ft/s |
| 1,000 kn | 1,687.8099 ft/s |
About the units
Knot (kn)
One nautical mile per hour (about 1.15 mph). The standard speed unit for ships, aircraft and wind reports. One knot equals 0.5144444444 meters per second (m/s).
Foot per second (ft/s)
Exactly 0.3048 m/s. Used for projectile and fluid velocities in US engineering.
Frequently asked questions
How many feet per second are in one knot?
There are 1.687809857 feet per second in one knot, and this value is exact by definition.
How do I convert knots to feet per second?
Multiply the number of knots by 1.687809857. For example, 10 kn × 1.687809857 = 16.87809857 ft/s.
How many knots are in one foot per second?
One foot per second equals 0.5924838013 knots. That is the reverse factor, 1 ÷ 1.687809857.
What is 10 knots in feet per second?
10 kn = 16.87809857 ft/s.
Is this kn to ft/s converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.