Home› Conversions› Speed› Feet per second to Kilometers per hour
Speed
Feet per second to Kilometers per hour
Convert feet per second (ft/s) to kilometers per hour (km/h). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 ft/s = 1.0973 km/h
Feet per second to Kilometers per hour Conversion Table
Common values, ready to copy:
| feet per second | kilometers per hour |
|---|---|
| 1 ft/s | 1.0973 km/h |
| 2 ft/s | 2.1946 km/h |
| 5 ft/s | 5.4864 km/h |
| 10 ft/s | 10.9728 km/h |
| 25 ft/s | 27.432 km/h |
| 50 ft/s | 54.864 km/h |
| 100 ft/s | 109.73 km/h |
| 1,000 ft/s | 1097.28 km/h |
Formula
kilometers per hour = feet per second × 1.09727912e+0
Speed is distance per unit time. 1 m/s = 3.6 km/h. 1 mph = 1.609344 km/h. 1 knot = 1.852 km/h (one nautical mile per hour).
About Feet per second and Kilometers per hour
Feet per second (ft/s): Imperial-system speed unit, occasionally used in US engineering and scientific contexts. Common uses: Ballistics (bullet velocities), some sports analytics (US football, baseball pitch tracking), and certain physics calculations in US-derived sources.
Kilometers per hour (km/h): A practical unit derived from the kilometer (defined via the meter) and the hour (60 × 60 seconds). Common uses: Vehicle speed limits worldwide except in the US and a few other countries, train and aircraft cruise speeds (in metric contexts), and weather wind speeds.
How the conversion works
Speed is distance per unit time. 1 m/s = 3.6 km/h. 1 mph = 1.609344 km/h. 1 knot = 1.852 km/h (one nautical mile per hour).
The exact relationship is kilometers per hour = feet per second × 1.09727912e+0, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between feet per second and kilometers per hour comes up wherever speed measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.