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 1638 feet per second into kilometers per hour we have to multiply 1638 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

1638 ft/s → V_(km/h)

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

V_(km/h) = 1638 ft/s × 1.0972799999991 km/h

V_(km/h) = 1797.3446399986 km/h

The final result is:

1638 ft/s → 1797.3446399986 km/h

We conclude that 1638 feet per second is equivalent to 1797.3446399986 kilometers per hour:

1638 feet per second = 1797.3446399986 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 0.00055637632190608 × 1638 feet per second.

Another way is saying that 1638 feet per second is equal to 1 ÷ 0.00055637632190608 kilometers per hour.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that one thousand six hundred thirty-eight feet per second is approximately one thousand seven hundred ninety-seven point three four five kilometers per hour:

1638 ft/s ≅ 1797.345 km/h

An alternative is also that one kilometer per hour is approximately zero point zero zero one times one thousand six hundred thirty-eight 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