With this information, you can calculate the quantity of knots 90 miles per hour is equal to.

¿What is the inverse calculation between 1 knot and 90 miles per hour?

Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.012786438 times 90 miles per hour.

Which is the same to say that 90 miles per hour is 78.207862 knots.

Ninety miles per hour equals to seventy-eight knots. *Approximation

A knot is zero times ninety miles per hour. *Approximation