Velocity
km/htoft/s
Convert kilometres per hour (km/h) to feet per second (ft/s).
Factor1 km/h = 0.9113444 ft/s
Converter
km/h
Accepts numbers or expressions, e.g. 150 + 14.7
Result
ft/s
Rendered to 6 significant figures.
Formula
Formula
ft/s = km/h × 0.9113444
Multiply any value in kilometres per hour by 0.9113444 to obtain the value in feet per second.
Worked example
Convert 100 km/h to ft/s.
- 01Start with 100 km/h.
- 02Multiply by the conversion factor: 100 × 0.9113444 = 91.1344 ft/s.
Result100 km/h = 91.1344 ft/s
Conversion table
| km/h | ft/s |
|---|---|
| 1 | 0.91134 |
| 2 | 1.8227 |
| 5 | 4.5567 |
| 10 | 9.1134 |
| 20 | 18.227 |
| 50 | 45.567 |
| 100 | 91.134 |
| 200 | 182.27 |
| 500 | 455.67 |
| 1000 | 911.34 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from km/h to ft/s?
1 km/h equals 0.9113444 ft/s. To convert, multiply the value in kilometres per hour by 0.9113444.
How do I convert 1 km/h to ft/s?
1 km/h = 0.911344 ft/s. For any value, multiply by 0.9113444.
How do I convert ft/s back to km/h?
Divide by the same factor — or equivalently, multiply by 1.09728. So 1 ft/s = 1.09728 km/h.
When would I need to convert kilometre per hour to foot per second?
Velocity conversions are needed for fluid flow analysis (line velocity targets, erosional limits), gas-stream calculations, and equipment specs that mix m/s, ft/s and engineering speed units.
Is the conversion exact?
Yes. Both km/h and ft/s are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).