With this information, you can calculate the quantity of feet per minute 646 knots is equal to.

¿What is the inverse calculation between 1 foot per minute and 646 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per minute is 1.528596e-05 times 646 knots.

Which is the same to say that 646 knots is 65419.51 feet per minute.

Six hundred forty-six knots equals to sixty-five thousand four hundred nineteen feet per minute. *Approximation

A foot per minute is one times six hundred forty-six knots. *Approximation