With this information, you can calculate the quantity of feet per second 91 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 91 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.006510811 times 91 knots.

Which is the same to say that 91 knots is 153.5907 feet per second.

Ninety-one knots equals to one hundred fifty-three feet per second. *Approximation

A foot per second is zero times ninety-one knots. *Approximation