With this information, you can calculate the quantity of miles per hour 31 knots is equal to.
¿What is the inverse calculation between 1 mile per hour and 31 knots?
Performing the inverse calculation of the relationship between units, we obtain that 1 mile per hour is 0.028031492 times 31 knots.
Which is the same to say that 31 knots is 35.674163 miles per hour.
Thirty-one knots equals to thirty-five miles per hour. *Approximation
A mile per hour is zero times thirty-one knots. *Approximation