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.
The UK is metric for most trade and science but keeps miles, pints, stone and mpg (with the imperial gallon) in daily life.
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 Physical Laboratory (NPL) — United Kingdom's national measurement authority.
Last checked: September 2026. Conversion factors are fixed by definition and do not change with tax years or regulations.