## Conversion formula

The conversion factor from feet per second to kilometers per hour is 1.0972799999991, which means that 1 foot per second is equal to 1.0972799999991 kilometers per hour:

1 ft/s = 1.0972799999991 km/h

To convert 20.4 feet per second into kilometers per hour we have to multiply 20.4 by the conversion factor in order to get the velocity amount from feet per second to kilometers per hour. We can also form a simple proportion to calculate the result:

1 ft/s → 1.0972799999991 km/h

20.4 ft/s → V(km/h)

Solve the above proportion to obtain the velocity V in kilometers per hour:

V(km/h) = 20.4 ft/s × 1.0972799999991 km/h

V(km/h) = 22.384511999982 km/h

The final result is:

20.4 ft/s → 22.384511999982 km/h

We conclude that 20.4 feet per second is equivalent to 22.384511999982 kilometers per hour:

20.4 feet per second = 22.384511999982 kilometers per hour

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilometer per hour is equal to 0.044673745847164 × 20.4 feet per second.

Another way is saying that 20.4 feet per second is equal to 1 ÷ 0.044673745847164 kilometers per hour.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that twenty point four feet per second is approximately twenty-two point three eight five kilometers per hour:

20.4 ft/s ≅ 22.385 km/h

An alternative is also that one kilometer per hour is approximately zero point zero four five times twenty point four feet per second.

## Conversion table

### feet per second to kilometers per hour chart

For quick reference purposes, below is the conversion table you can use to convert from feet per second to kilometers per hour

feet per second (ft/s) kilometers per hour (km/h)
21.4 feet per second 23.482 kilometers per hour
22.4 feet per second 24.579 kilometers per hour
23.4 feet per second 25.676 kilometers per hour
24.4 feet per second 26.774 kilometers per hour
25.4 feet per second 27.871 kilometers per hour
26.4 feet per second 28.968 kilometers per hour
27.4 feet per second 30.065 kilometers per hour
28.4 feet per second 31.163 kilometers per hour
29.4 feet per second 32.26 kilometers per hour
30.4 feet per second 33.357 kilometers per hour