With this information, you can calculate the quantity of knots 21 kilometers per hour is equal to.
¿What is the inverse calculation between 1 knot and 21 kilometers per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.088190476 times 21 kilometers per hour.
Which is the same to say that 21 kilometers per hour is 11.339093 knots.
Twenty-one kilometers per hour equals to eleven knots. *Approximation
A knot is zero times twenty-one kilometers per hour. *Approximation
