With this information, you can calculate the quantity of knots 57 miles per hour is equal to.

¿What is the inverse calculation between 1 knot and 57 miles per hour?

Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.020189113 times 57 miles per hour.

Which is the same to say that 57 miles per hour is 49.531646 knots.

Fifty-seven miles per hour equals to forty-nine knots. *Approximation

A knot is zero times fifty-seven miles per hour. *Approximation