With this information, you can calculate the quantity of feet per minute 687 knots is equal to.

¿What is the inverse calculation between 1 foot per minute and 687 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per minute is 1.4373697e-05 times 687 knots.

Which is the same to say that 687 knots is 69571.522 feet per minute.

Six hundred eighty-seven knots equals to sixty-nine thousand five hundred seventy-one feet per minute. *Approximation

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