With this information, you can calculate the quantity of miles per hour 3 knots is equal to.

¿What is the inverse calculation between 1 mile per hour and 3 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 mile per hour is 0.28965875 times 3 knots.

Which is the same to say that 3 knots is 3.4523383 miles per hour.

Three knots equals to three miles per hour. *Approximation

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