⚡ Speed
ft/s to km/h Converter
Convert ft/s to km/h instantly with a reference conversion table.
Quick answer: To convert ft/s to km/h, multiply by 1.09728. For example, 1 ft/s = 1.09728 km/h. Use the calculator below for any value.
ft/s to km/h
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Common conversions
| ft/s | km/h |
|---|
Formula:
How to convert ft/s to km/h
1
Enter your value
Type the number of ft/s you want to convert into the left box. The result in km/h appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — km/h to ft/s. Your current value carries across so you don't have to re-enter anything.
3
About ft/s and km/h
ft/s and km/h are common speed measurements.
💡 Did you know?
1 fps = 1.097 kph. Sound in dry air at 20°C: 343 m/s = 1,235 kph = 1,126 fps. Supersonic is above Mach 1 (≈ 343 m/s at sea level). The Concorde cruise speed was Mach 2.04 = 2,179 kph = 1,354 mph = 1,987 fps.
📊 Common conversions at a glance
| ft/s | km/h |
|---|---|
| 1 | 1.097 |
| 5 | 5.486 |
| 10 | 10.97 |
| 15 | 16.46 |
| 20 | 21.95 |
| 30 | 32.92 |
Reviewed for 2026. ft/s ↔ km/h conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.