With this information, you can calculate the quantity of feet per second 999 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 999 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00059307688 times 999 knots.

Which is the same to say that 999 knots is 1686.122 feet per second.

Nine hundred ninety-nine knots equals to one thousand six hundred eighty-six feet per second. *Approximation

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