Convert Kilometers per hour to Feet per second
One kilometer per hour equals 0.911344 feet per second. Type any value to convert kilometers per hour to feet per second instantly — with a full reference table below.
Convert Kilometers per hour to Feet per second
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How to convert Kilometers per hour to Feet per second
To convert kilometers per hour to feet per second, multiply by 0.911344. One kilometer per hour equals 0.911344 ft/s, and one foot per second equals 1.09728 km/h.
- Take the value in kilometers per hour — for example 7.5 km/h.
- Multiply by 0.911344 (the number of feet per second in one kilometer per hour).
- 7.5 × 0.911344 = 6.835083 ft/s.
Quick mental estimate: Divide the number of kilometers per hour by 1.1 (within 0.2% of the exact answer).
Kilometers per hour to Feet per second conversion table
| Kilometers per hour | Feet per second |
|---|---|
| 1 km/h | 0.911344 ft/s |
| 5 km/h | 4.556722 ft/s |
| 10 km/h | 9.113444 ft/s |
| 20 km/h | 18.22689 ft/s |
| 25 km/h | 22.78361 ft/s |
| 30 km/h | 27.34033 ft/s |
| 40 km/h | 36.45378 ft/s |
| 50 km/h | 45.56722 ft/s |
| 60 km/h | 54.68066 ft/s |
| 70 km/h | 63.79411 ft/s |
| 80 km/h | 72.90755 ft/s |
| 100 km/h | 91.13444 ft/s |
| 120 km/h | 109.3613 ft/s |
| Feet per second | Kilometers per hour |
|---|---|
| 1 ft/s | 1.09728 km/h |
| 5 ft/s | 5.4864 km/h |
| 10 ft/s | 10.9728 km/h |
| 20 ft/s | 21.9456 km/h |
| 25 ft/s | 27.432 km/h |
| 30 ft/s | 32.9184 km/h |
| 40 ft/s | 43.8912 km/h |
| 50 ft/s | 54.864 km/h |
| 60 ft/s | 65.8368 km/h |
| 70 ft/s | 76.8096 km/h |
| 80 ft/s | 87.7824 km/h |
| 100 ft/s | 109.728 km/h |
| 120 ft/s | 131.6736 km/h |
About converting Kilometers per hour to Feet per second
Kilometers per hour (km/h) and Feet per second (ft/s) are both units of speed. The exact factor is 1 km/h = 0.911344 ft/s, so multiply by 0.911344 to go from kilometers per hour to feet per second (or divide to go back).
The conversion runs entirely in your browser. Need the reverse? Use the Feet per second to Kilometers per hour converter, or the full unit converter for every unit at once.
Real-world speed in kilometers per hour and feet per second
| Example | Kilometers per hour | Feet per second |
|---|---|---|
| A walking pace | ≈ 5.04 km/h | ≈ 4.593176 ft/s |
| Usain Bolt's top speed (2009) | ≈ 44.712 km/h | ≈ 40.74803 ft/s |
| The UK motorway limit (70 mph) | 112.6541 km/h | 102.6667 ft/s |
| The German Autobahn advisory speed (130 km/h) | 130 km/h | 118.4747 ft/s |
| The speed of sound (air, 20 °C) | ≈ 1,234.8 km/h | ≈ 1,125.328 ft/s |
| An airliner at cruise | ≈ 900 km/h | ≈ 820.21 ft/s |
“≈” marks typical values; the rest are defined or measured figures.
The units
Kilometres per hour — exactly 1/3.6 m/s.
Used for: Road speeds in most countries.
Feet per second — exactly 0.3048 m/s.
Used for: Ballistics, engineering and US sport analytics.
km/h, mph, ft/s and knots are all defined exactly in metres per second (a knot is one nautical mile, exactly 1,852 m, per hour).