With this information, you can calculate the quantity of feet per second 813 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 813 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00072876236 times 813 knots.

Which is the same to say that 813 knots is 1372.1894 feet per second.

Eight hundred thirteen knots equals to one thousand three hundred seventy-two feet per second. *Approximation

A foot per second is zero times eight hundred thirteen knots. *Approximation