With this information, you can calculate the quantity of kilometers per hour 621 knots is equal to.

¿What is the inverse calculation between 1 kilometer per hour and 621 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 kilometer per hour is 0.00086949566 times 621 knots.

Which is the same to say that 621 knots is 1150.092 kilometers per hour.

Six hundred twenty-one knots equals to one thousand one hundred fifty kilometers per hour. *Approximation

A kilometer per hour is zero times six hundred twenty-one knots. *Approximation