Feet per Second to km/h (ft/s to km/h) Converter
1 foot per second equals 1.09728 kilometers per hour — multiply feet per second by 1.09728 to convert. Since one foot is exactly 0.3048 meters and there are 3,600 seconds in an hour, 0.3048 × 3600 ÷ 1000 = 1.09728 km/h per ft/s.
The formula
To convert feet per second to kilometers per hour, multiply by 1.09728:
km/h = ft/s × 1.09728
Example: 25 × 1.09728 = 27.432 km/hTo reverse it, divide km/h by 1.09728 (or multiply by 0.91134442) to get ft/s.
Conversion table
| Feet per second (ft/s) | Kilometers per hour (km/h) |
|---|---|
| 1 | 1.09728 |
| 2 | 2.19456 |
| 3 | 3.29184 |
| 5 | 5.4864 |
| 10 | 10.9728 |
| 25 | 27.432 |
| 50 | 54.864 |
| 100 | 109.728 |
| 500 | 548.64 |
| 1000 | 1097.28 |
How to convert online
- Type the speed in feet per second into the first box.
- Read the km/h value instantly in the second box.
- Or enter a km/h value to convert back to ft/s — it works both ways.
Use the Foot per Second to Kilometer per Hour Converter — free and instant in your browser.
Where this conversion is used
Feet per second is common in US physics problems, ballistics, and sports analytics (pitch and sprint speeds), while km/h is the everyday road-speed unit in most of the world. Converting between them is useful for comparing measured speeds, calibrating equipment, and translating textbook figures into familiar units.
FAQ
How many km/h are in a foot per second?
One foot per second equals 1.09728 km/h. Multiply ft/s by 1.09728 — for example, 10 ft/s = 10.9728 km/h.
What is the formula to convert ft/s to km/h?
km/h = ft/s × 1.09728, derived from 0.3048 m/ft and 3600 s/h.
How do I convert km/h back to ft/s?
Divide by 1.09728, or multiply by 0.91134442. For example, 27.432 km/h ÷ 1.09728 = 25 ft/s.
Is the conversion exact?
Yes. It rests on the exact definition of a foot as 0.3048 meters, so 1.09728 is exact.
Related converters
- Kilometer per Hour to Foot per Second Converter
- Foot per Second to Meter per Second Converter
- Foot per Second to Mile per Hour Converter
- Foot per Second to Knot Converter
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