Convert Kilometers per Hour to Feet per Second
km/h to ft/s · speed conversion
What are kilometers per hour and feet per second?
Kilometers per hour is the standard metric unit for vehicle speed in most countries. Feet per second is an imperial speed unit used in ballistics and some engineering. For reference: a brisk walk is about 5 km/h (3 mph), and highway speed is around 100 km/h (62 mph).
How to convert kilometers per hour to feet per second
1 km/h = 0.911345 ft/s. To convert, multiply the number of kilometers per hour by 0.911345. For example, 5 km/h = 4.55673 ft/s, and 20 km/h = 18.2269 ft/s. To go the other way, multiply feet per second by 1.09728 (since 1 ft/s = 1.09728 km/h).
Kilometers per Hour to Feet per Second conversion table
| Kilometers per Hour (km/h) | Feet per Second (ft/s) |
|---|---|
| 1 | 0.911345 |
| 5 | 4.55673 |
| 10 | 9.11345 |
| 30 | 27.3404 |
| 60 | 54.6807 |
| 100 | 91.1345 |
| 120 | 109.361 |
FAQ
What is 1 km/h in ft/s?
1 km/h = 0.911345 ft/s. To convert any amount, multiply the number of kilometers per hour by 0.911345.
How do I convert feet per second back to kilometers per hour?
Go the other way: 1 ft/s = 1.09728 km/h, so multiply feet per second by 1.09728 to get kilometers per hour.
Is a kilometers per hour bigger than a feet per second?
No — 1 km/h is the smaller unit, equal to 0.911345 ft/s (it takes 1.09728 km/h to make one ft/s).
Are these speed conversions exact?
They use the standard internationally-defined conversion factors. Results are rounded to six significant figures for readability, which is accurate enough for everyday and most technical use.