With this information, you can calculate the quantity of knots 405 feet per minute is equal to.

¿What is the inverse calculation between 1 knot and 405 feet per minute?

Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.2500459 times 405 feet per minute.

Which is the same to say that 405 feet per minute is 3.9992657 knots.

Four hundred five feet per minute equals to three knots. *Approximation

A knot is zero times four hundred five feet per minute. *Approximation