With this information, you can calculate the quantity of feet per second 648 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 648 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00091432685 times 648 knots.

Which is the same to say that 648 knots is 1093.7008 feet per second.

Six hundred forty-eight knots equals to one thousand ninety-three feet per second. *Approximation

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