Conversion tool

Convert knots to feet per second instantly

Enter a value, see the result, copy it, and save a PDF snapshot.

Input

Type a value, then press Enter to calculate.

Result

0.000 ft/s

Digits 3

Rounded for readability. Use the arrows to increase or decrease the number of shown digits.

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Notes

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Disclaimer: Use calculations at your own risk. For critical applications, verify results against your governing standards/specifications.

How it works

We use ft/s = kn x 1.6878098571.

Exact relationship: 1 kn = 1.6878098571 ft/s.

Example: 10 kn = 16.878 ft/s.

Notes: Results are rounded in the default view.

Examples

FAQ

What physical quantity do knots and feet per second express?

Knots express speed using nautical miles per hour and are tied to navigation, marine travel, and aviation contexts. Feet per second are a customary speed unit used to describe rate of motion, flow, and travel in U.S.-oriented technical contexts.

What is the difference between knots and feet per second?

Knots and feet per second both express speed, but they come from different measurement conventions and are used in different technical and transportation contexts.

What is the history of the knot?

The knot comes from maritime navigation practice and remains a standard speed unit in sea and air operations.

What is the history of the foot per second?

Feet per second developed from customary distance and time measures and remain useful where feet are already the working length unit.

Were the knot and foot per second discovered by a specific person?

The knot comes from navigation tradition and standardization rather than from one discoverer. Feet per second evolved as a practical derived unit rather than being discovered by one person.

Where are knots and feet per second used in science and engineering?

Knots are used in aviation, marine navigation, weather reporting, and operational planning across nautical contexts. Feet per second appear in ballistics, motion systems, fluid references, ventilation work, and machine-rate calculations.

Why do speed units matter in calculations?

Speed units affect motion planning, travel estimates, machine timing, flow assumptions, and safety margins. Keeping the unit attached to the value helps prevent calculation mistakes.

Can I trust this for critical calculations?

Use this for convenience and verify against your governing standard, requirement, or control document for critical work. The arithmetic is straightforward, but system context still matters.

References