With this information, you can calculate the quantity of feet per second 664 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 664 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00089229488 times 664 knots.

Which is the same to say that 664 knots is 1120.7057 feet per second.

Six hundred sixty-four knots equals to one thousand one hundred twenty feet per second. *Approximation

A foot per second is zero times six hundred sixty-four knots. *Approximation