With this information, you can calculate the quantity of feet per second 858 knots is equal to.

¿What is the inverse calculation between 1 foot per second and 858 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 foot per second is 0.00069054056 times 858 knots.

Which is the same to say that 858 knots is 1448.1409 feet per second.

Eight hundred fifty-eight knots equals to one thousand four hundred forty-eight feet per second. *Approximation

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