km/h to Feet per Second Converter
Convert kilometres per hour to feet per second — divide by 1.09728. Results update as you type; exact factors shown.
One kilometre per hour is 0.9113 feet per second — see the exact factor, not a rounded rule of thumb.
How the km/h to feet per second converter works
Speeds convert through metres per second. 1 km/h is 1000/3600 m/s; 1 mph is 1609.344/3600 m/s; a knot is one nautical mile (1,852 m) per hour. Mach is shown against the standard sea-level speed of sound of 340.29 m/s and varies with altitude and temperature.
Australia is fully metric under the National Measurement Act 1960; imperial units appear only in trade with the US and in older documents.
Common speed conversions
| From | To | Units |
|---|---|---|
| 1 km/h | 0.9113 ft/s | kilometre per hour to feet per second |
| 5 km/h | 4.5567 ft/s | kilometres per hour to feet per second |
| 10 km/h | 9.1134 ft/s | kilometres per hour to feet per second |
| 20 km/h | 18.2269 ft/s | kilometres per hour to feet per second |
| 30 km/h | 27.3403 ft/s | kilometres per hour to feet per second |
| 40 km/h | 36.4538 ft/s | kilometres per hour to feet per second |
| 50 km/h | 45.5672 ft/s | kilometres per hour to feet per second |
| 60 km/h | 54.6807 ft/s | kilometres per hour to feet per second |
| 80 km/h | 72.9076 ft/s | kilometres per hour to feet per second |
| 100 km/h | 91.1344 ft/s | kilometres per hour to feet per second |
| 110 km/h | 100.2479 ft/s | kilometres per hour to feet per second |
| 130 km/h | 118.4748 ft/s | kilometres per hour to feet per second |
Units in this converter and their exact factors
| Unit | Symbol | One unit in metre per seconds |
|---|---|---|
| metre per second | m/s | 1 metre per second |
| kilometre per hour | km/h | 0.2777777778 metre per second |
| mile per hour | mph | 0.44704 metre per second |
| knot | kn | 0.5144444444 metre per second |
| foot per second | ft/s | 0.3048 metre per second |
| Mach (sea level, 15 °C) | Ma | 340.29 metre per second |
FAQFrequently asked questions about speed conversion
How many feet per second is 1 km/h?
0.9113 ft/s.
What is 100 km/h in ft/s?
91.13 ft/s.
Where is ft/s used?
US ballistics, sports measurement and some engineering.
What is 60 km/h in ft/s?
54.68 ft/s.
How does that compare to mph?
60 km/h is 37.3 mph, and mph times 1.467 gives ft/s.
Where these figures come from
- BIPM — The International System of Units (SI Brochure, 9th edition) — definitions of the base and derived units.
- NIST Special Publication 811 — Guide for the Use of the International System of Units — the exact conversion factors used here.
- National Measurement Institute (NMI) — Australia's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.