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 521 feet per second into kilometers per hour we have to multiply 521 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

521 ft/s → V_(km/h)

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

V_(km/h) = 521 ft/s × 1.0972799999991 km/h

V_(km/h) = 571.68287999954 km/h

The final result is:

521 ft/s → 571.68287999954 km/h

We conclude that 521 feet per second is equivalent to 571.68287999954 kilometers per hour:

521 feet per second = 571.68287999954 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 0.0017492215264533 × 521 feet per second.

Another way is saying that 521 feet per second is equal to 1 ÷ 0.0017492215264533 kilometers per hour.

Approximate result

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

521 ft/s ≅ 571.683 km/h

An alternative is also that one kilometer per hour is approximately zero point zero zero two times five hundred twenty-one 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