Unit Converter
Conversion formula
The conversion factor from kilometers per hour to feet per second is 0.91134441528215, which means that 1 kilometer per hour is equal to 0.91134441528215 feet per second:
1 km/h = 0.91134441528215 ft/s
To convert 21 kilometers per hour into feet per second we have to multiply 21 by the conversion factor in order to get the velocity amount from kilometers per hour to feet per second. We can also form a simple proportion to calculate the result:
1 km/h → 0.91134441528215 ft/s
21 km/h → V(ft/s)
Solve the above proportion to obtain the velocity V in feet per second:
V(ft/s) = 21 km/h × 0.91134441528215 ft/s
V(ft/s) = 19.138232720925 ft/s
The final result is:
21 km/h → 19.138232720925 ft/s
We conclude that 21 kilometers per hour is equivalent to 19.138232720925 feet per second:
21 kilometers per hour = 19.138232720925 feet per second
Alternative conversion
We can also convert by utilizing the inverse value of the conversion factor. In this case 1 foot per second is equal to 0.052251428571387 × 21 kilometers per hour.
Another way is saying that 21 kilometers per hour is equal to 1 ÷ 0.052251428571387 feet per second.
Approximate result
For practical purposes we can round our final result to an approximate numerical value. We can say that twenty-one kilometers per hour is approximately nineteen point one three eight feet per second:
21 km/h ≅ 19.138 ft/s
An alternative is also that one foot per second is approximately zero point zero five two times twenty-one kilometers per hour.
Conversion table
kilometers per hour to feet per second chart
For quick reference purposes, below is the conversion table you can use to convert from kilometers per hour to feet per second
kilometers per hour (km/h) | feet per second (ft/s) |
---|---|
22 kilometers per hour | 20.05 feet per second |
23 kilometers per hour | 20.961 feet per second |
24 kilometers per hour | 21.872 feet per second |
25 kilometers per hour | 22.784 feet per second |
26 kilometers per hour | 23.695 feet per second |
27 kilometers per hour | 24.606 feet per second |
28 kilometers per hour | 25.518 feet per second |
29 kilometers per hour | 26.429 feet per second |
30 kilometers per hour | 27.34 feet per second |
31 kilometers per hour | 28.252 feet per second |