With this information, you can calculate the quantity of feet per minute 399 knots is equal to.

¿What is the inverse calculation between 1 foot per minute and 399 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per minute is 2.4748697e-05 times 399 knots.

Which is the same to say that 399 knots is 40406.168 feet per minute.

Three hundred ninety-nine knots equals to forty thousand four hundred six feet per minute. *Approximation

A foot per minute is two times three hundred ninety-nine knots. *Approximation