km/h to feet per second – convert km/h to fps
Convert kilometres per hour to feet per second (km/h to fps) to express familiar road or running speeds in an impact-style fps unit often used in physics and ballistics.
Open the interactive km/h → fps converter:
Use main converter (km/h → fps) or switch to fps → km/hThe speed converter can also move between km/h, mph, m/s and knots with the same interface.
Quick reference: km/h to fps
One kilometre per hour is about 0.911 fps. So: fps = km/h × 0.911344. Examples:
| Speed (km/h) | Feet per second (fps, approx.) |
|---|---|
| 5 km/h | 4.56 fps |
| 10 km/h | 9.11 fps |
| 20 km/h | 18.23 fps |
| 30 km/h | 27.34 fps |
| 50 km/h | 45.57 fps |
| 100 km/h | 91.13 fps |
Why convert km/h to feet per second?
km/h to fps is useful when you:
- Relate car or bike speeds to impact and stopping-distance calculations.
- Convert speed camera or radar data into fps for physics work.
- Mix metric road speeds with imperial design dimensions in feet.
- Teach how km/h, mph, m/s and fps are connected.
Other speed converters on this site
For quick mental maths you can approximate 1 km/h ≈ 0.9 fps, but the converter keeps the more precise 0.911344 factor.
Page last updated: 4 December 2025.