With this information, you can calculate the quantity of knots 421 kilometers per hour is equal to.
¿What is the inverse calculation between 1 knot and 421 kilometers per hour?
Performing the inverse calculation of the relationship between units, we obtain that 1 knot is 0.0043990499 times 421 kilometers per hour.
Which is the same to say that 421 kilometers per hour is 227.32181 knots.
Four hundred twenty-one kilometers per hour equals to two hundred twenty-seven knots. *Approximation
A knot is zero times four hundred twenty-one kilometers per hour. *Approximation
