With this information, you can calculate the quantity of knots 309 miles per hour is equal to.

¿What is the inverse calculation between 1 knot and 309 miles per hour?

Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.0037242053 times 309 miles per hour.

Which is the same to say that 309 miles per hour is 268.51366 knots.

Three hundred nine miles per hour equals to two hundred sixty-eight knots. *Approximation

A knot is zero times three hundred nine miles per hour. *Approximation