Convert Knots to Feet per Second

Converting Knots (kn) to Feet per Second (ft/s) is a common task in speed measurements. Speed conversions connect metric road limits, aviation knots, and imperial miles per hour — common when traveling internationally or reading foreign weather reports.

Formula: Multiply the knots value by 1.68781. In equation form: ft/s = kn × 1.68781.

One knots equals approximately 1.687808 ft/s. This means you can multiply any kn value by 1.687808 to get the equivalent in ft/s.

For instance, converting 5 kn gives 8.439042 ft/s. Try different values using the quick-value chips or type directly into the input field.

Common mistake: Knots measure nautical miles per hour, not statute miles — they are close but not identical to mph.

Bookmark this page for quick kn to ft/s conversions, or use the swap button to reverse the direction and convert ft/s back to kn.