Convert Feet per Second to Kilometers per Hour

The ft/s-to-km/h conversion appears often when working with speed data across different unit systems. Speed conversions connect metric road limits, aviation knots, and imperial miles per hour — common when traveling internationally or reading foreign weather reports.

To convert, multiply the feet per second value by 1.09728. Written as an equation: km/h = ft/s × 1.09728.

One feet per second equals approximately 1.097279 km/h. This means you can multiply any ft/s value by 1.097279 to get the equivalent in km/h.

Worked example: 100 ft/s = 109.727912 km/h. Enter your own value in the converter above for instant results.

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

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