With this information, you can calculate the quantity of miles per hour 664 knots is equal to.

¿What is the inverse calculation between 1 mile per hour and 664 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 mile per hour is 0.0013086992 times 664 knots.

Which is the same to say that 664 knots is 764.11755 miles per hour.

Six hundred sixty-four knots equals to seven hundred sixty-four miles per hour. *Approximation

A mile per hour is zero times six hundred sixty-four knots. *Approximation