With this information, you can calculate the quantity of feet per second 666 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 666 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00088961532 times 666 knots.

Which is the same to say that 666 knots is 1124.0814 feet per second.

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

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