## 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 40 feet per second into kilometers per hour we have to multiply 40 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

40 ft/s → V(km/h)

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

V(km/h) = 40 ft/s × 1.0972799999991 km/h

V(km/h) = 43.891199999965 km/h

The final result is:

40 ft/s → 43.891199999965 km/h

We conclude that 40 feet per second is equivalent to 43.891199999965 kilometers per hour:

40 feet per second = 43.891199999965 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 0.022783610382054 × 40 feet per second.

Another way is saying that 40 feet per second is equal to 1 ÷ 0.022783610382054 kilometers per hour.

## Approximate result

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

40 ft/s ≅ 43.891 km/h

An alternative is also that one kilometer per hour is approximately zero point zero two three times forty 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)
41 feet per second 44.988 kilometers per hour
42 feet per second 46.086 kilometers per hour
43 feet per second 47.183 kilometers per hour
44 feet per second 48.28 kilometers per hour
45 feet per second 49.378 kilometers per hour
46 feet per second 50.475 kilometers per hour
47 feet per second 51.572 kilometers per hour
48 feet per second 52.669 kilometers per hour
49 feet per second 53.767 kilometers per hour
50 feet per second 54.864 kilometers per hour