Knots to Feet per Second
Snapshot
1 Knot equals 1.68781 Feet per Second. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.
- Reference basis: This result uses fixed vessel-speed definitions anchored to knots and the active marine route.
- Example: For 5 Knot, the result equals 8.439049 Feet per Second.
- Use the reverse page if you need the opposite direction with the same basis.
Use the interactive calculator below for custom values and the common-value table for quick checks.
Converter Calculator
1.68781 Feet per Second (ft/s)
SwitchExplanation
Formula: Feet per Second = Knot × 1.68781. Why: marine speed units are normalized through knots, so the route follows one deterministic vessel-speed basis before applying the target unit.
Knots (kn): the standard marine speed unit, equal to one nautical mile per hour.
Feet per Second (ft/s): an imperial speed unit used in engineering and flow-style velocity references.
This route is useful when restating vessel speed between knots and engineering or land-speed units for navigation, instrumentation, and performance reporting.
This conversion is purely multiplicative because both units reduce through one fixed marine reference basis for the active family, with no offset.
Common Conversion Values
| Knot (kn) | Feet per Second (ft/s) |
|---|---|
| 1 | 1.68781 |
| 5 | 8.439049 |
| 10 | 16.878099 |
| 15 | 25.317148 |
| 20 | 33.756197 |
| 30 | 50.634296 |
| 40 | 67.512394 |
Frequently Asked Questions
How many feet per second are in 1 knot?
This route uses a fixed factor, so 1 knot equals 1.6878098571 feet per second.
What is the reverse conversion for Knots to Feet per Second?
Use the Feet per Second to Knots page to reverse the same vessel-speed relationship for knots, current, and performance checks.
Can I use decimal knots values?
Yes. Decimal knots values are supported for vessel speed, current, and instrumentation checks.