Convert Kilometres per hour to Feet per second
1 kilometre per hour is 0.911344 ft/s. One kilometre per hour is exactly 0.911344415281 feet per second.
One kilometre per hour is 0.91134442 feet per second. To convert kilometres per hour to feet per second, multiply by 0.91134442; to go the other way, divide by 0.91134442 or multiply by 1.09728. The factor is exact rather than rounded: it follows from NIST Special Publication 811. Exactly one kilometre divided by 3,600 seconds.
Factor checked against the defining standard · How we check
- Kilometres per hour × 0.91134442
value * 0.9113444152810.911 ft/s
1 kilometre per hour in every speed unit
| Unit | Value | Exact factor |
|---|---|---|
| metres per second | 0.2777777778 m/s | × 0.277777777778 |
| kilometres per hour (as entered) | 1 km/h | — |
| miles per hour | 0.6213711922 mph | × 0.621371192237 |
| knots | 0.5399568035 kn | × 0.539956803456 |
| feet per second | 0.9113444153 ft/s | × 0.911344415281 |
Factors are entered by hand from NIST Special Publication 811 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert kilometres per hour to feet per second?
- 1.Take the measurement in kilometres per hour.
- 2.Multiply by 0.91134442 — that is how many feet per second fit in one kilometre per hour.
- 3.To go back the other way, divide by 0.91134442, or multiply by 1.09728.
Kilometres per hour to feet per second conversion table
| Kilometres per hour | Feet per second |
|---|---|
| 1 km/h | 0.911344 ft/s |
| 2 km/h | 1.822689 ft/s |
| 3 km/h | 2.734033 ft/s |
| 4 km/h | 3.645378 ft/s |
| 5 km/h | 4.556722 ft/s |
| 6 km/h | 5.468066 ft/s |
| 7 km/h | 6.379411 ft/s |
| 8 km/h | 7.290755 ft/s |
| 9 km/h | 8.2021 ft/s |
| 10 km/h | 9.113444 ft/s |
| 12 km/h | 10.936133 ft/s |
| 15 km/h | 13.670166 ft/s |
| 20 km/h | 18.226888 ft/s |
| 25 km/h | 22.78361 ft/s |
| 50 km/h | 45.567221 ft/s |
| 100 km/h | 91.134442 ft/s |
What are kilometres per hour and feet per second?
- Kilometre per hour (km/h)
- Exactly one kilometre divided by 3,600 seconds. The road speed unit almost everywhere outside the United States and the United Kingdom.
- Foot per second (ft/s)
- Exactly 0.3048 m/s. Muzzle velocities, falling objects and anything where a foot is the natural length.
Source: NIST Special Publication 811 — conversion factors for speed
Questions people actually ask
- How many feet per second are in a kilometre per hour?
- 0.91134442. Exactly 0.3048 m/s. Muzzle velocities, falling objects and anything where a foot is the natural length.
- How do I convert feet per second back to kilometres per hour?
- Divide by 0.91134442, or multiply by 1.09728 — they are the same operation.
Other speed conversions
Feet per second to kilometres per hour — the same conversion the other way.