Convert Knots to Feet per second
1 knot is 1.68781 ft/s. One knot is exactly 1.6878098571 feet per second.
One knot is 1.6878099 feet per second. To convert knots to feet per second, multiply by 1.6878099; to go the other way, divide by 1.6878099 or multiply by 0.5924838. The factor is exact rather than rounded: it follows from NIST Special Publication 811. One nautical mile per hour — exactly 1,852 metres per hour.
Factor checked against the defining standard · How we check
Feet per second
1.68781 ft/s
- Knots × 1.6878099
value * 1.68780985711.688 ft/s
1 knot in every speed unit
| Unit | Value | Exact factor |
|---|---|---|
| metres per second | 0.5144444444 m/s | × 0.514444444444 |
| kilometres per hour | 1.852 km/h | × 1.852 |
| miles per hour | 1.150779448 mph | × 1.15077944802 |
| knots (as entered) | 1 kn | — |
| feet per second | 1.687809857 ft/s | × 1.6878098571 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert knots to feet per second?
- 1.Take the measurement in knots.
- 2.Multiply by 1.6878099 — that is how many feet per second fit in one knot.
- 3.To go back the other way, divide by 1.6878099, or multiply by 0.5924838.
Knots to feet per second conversion table
| Knots | Feet per second |
|---|---|
| 1 kn | 1.68781 ft/s |
| 2 kn | 3.37562 ft/s |
| 3 kn | 5.06343 ft/s |
| 4 kn | 6.751239 ft/s |
| 5 kn | 8.439049 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 |
| 12 kn | 20.253718 ft/s |
| 15 kn | 25.317148 ft/s |
| 20 kn | 33.756197 ft/s |
| 25 kn | 42.195246 ft/s |
| 50 kn | 84.390493 ft/s |
| 100 kn | 168.780986 ft/s |
What are knots and feet per second?
- Knot (kn)
- One nautical mile per hour — exactly 1,852 metres per hour. Used at sea and in the air because a nautical mile is one minute of latitude, which makes navigation arithmetic simple.
- Foot per second (ft/s)
- Exactly 0.3048 m/s. Muzzle velocities, falling objects and anything where a foot is the natural length.
Source: NIST Special Publication 811 — conversion factors for speed
Questions people actually ask
- How many feet per second are in a knot?
- 1.6878099. Exactly 0.3048 m/s. Muzzle velocities, falling objects and anything where a foot is the natural length.
- How do I convert feet per second back to knots?
- Divide by 1.6878099, or multiply by 0.5924838 — they are the same operation.
Other speed conversions
Feet per second to knots — the same conversion the other way.