With this information, you can calculate the quantity of miles per hour 9 knots is equal to.

¿What is the inverse calculation between 1 mile per hour and 9 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 mile per hour is 0.096552916 times 9 knots.

Which is the same to say that 9 knots is 10.357015 miles per hour.

Nine knots equals to ten miles per hour. *Approximation

A mile per hour is zero times nine knots. *Approximation