With this information, you can calculate the quantity of feet per second 257 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 257 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.0023053844 times 257 knots.

Which is the same to say that 257 knots is 433.76713 feet per second.

Two hundred fifty-seven knots equals to four hundred thirty-three feet per second. *Approximation

A foot per second is zero times two hundred fifty-seven knots. *Approximation