Knot to Foot per second Converter
Type a value — the answer appears instantly. 1 kn = 1.68781 ft/s.
Reviewed by the OmniCalc teamMethod verified 2026-07-01
1.68781 feet per second
= 1.852 km/h= 1.15078 mph
equals 1.68781 feet per secondFormula: ft/s = kn × 1.6878099
Knot to Foot per second formula
ft/s = kn × 1.6878099
Convert 5 knots to feet per second
- Start with 5 knots.
- Multiply by the conversion factor: 5 × 1.68781 = 8.43905.
- So 5 kn = 8.43905 ft/s.
Knot to Foot per second conversion table
| Knots (kn) | Feet per second (ft/s) |
|---|---|
| 0.01 kn | 0.0168781 ft/s |
| 0.1 kn | 0.168781 ft/s |
| 0.25 kn | 0.421952 ft/s |
| 0.5 kn | 0.843905 ft/s |
| 1 kn | 1.68781 ft/s |
| 2 kn | 3.37562 ft/s |
| 3 kn | 5.06343 ft/s |
| 4 kn | 6.75124 ft/s |
| 5 kn | 8.43905 ft/s |
| 6 kn | 10.1269 ft/s |
| 7 kn | 11.8147 ft/s |
| 8 kn | 13.5025 ft/s |
| 9 kn | 15.1903 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 |
| 40 kn | 67.5124 ft/s |
| 50 kn | 84.3905 ft/s |
| 75 kn | 126.586 ft/s |
| 100 kn | 168.781 ft/s |
| 250 kn | 421.952 ft/s |
| 500 kn | 843.905 ft/s |
| 1,000 kn | 1,687.81 ft/s |
| 5,000 kn | 8,439.05 ft/s |
| 10,000 kn | 16,878.1 ft/s |
Unit definitions
What is a knot?
The knot is one nautical mile per hour, the standard speed unit in maritime and aviation navigation. It is defined exactly from the 1852-metre nautical mile. One knot is about 1.852 kilometres per hour or 1.151 miles per hour.
What is a foot per second?
The foot per second is a US customary speed unit, the distance in feet covered each second. It is used in ballistics, physics problems, and some engineering fields. One foot per second is exactly 0.3048 metres per second.
Frequently asked questions
How many feet per second are in one knot?
One knot equals 1.68781 feet per second (1 kn = 1.68781 ft/s).
How do I convert knots to feet per second?
Multiply the value in knots by 1.68781. For example, 10 kn × 1.68781 = 16.8781 ft/s.
Which is bigger — a knot or a foot per second?
A knot is bigger: one knot contains 1.68781 feet per second.
Is this knot to foot per second converter free?
Yes — the converter is free, works offline once loaded, and computes instantly in your browser without sending your numbers to a server.
Conversion factors follow international definitions (SI / NIST). Last verified 2026-07-01.