With this information, you can calculate the quantity of knots 40 kilometers per hour is equal to.
¿What is the inverse calculation between 1 knot and 40 kilometers per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.0463 times 40 kilometers per hour.
Which is the same to say that 40 kilometers per hour is 21.598272 knots.
Forty kilometers per hour equals to twenty-one knots. *Approximation
A knot is zero times forty kilometers per hour. *Approximation