With this information, you can calculate the quantity of kilometers per hour 645 knots is equal to.

¿What is the inverse calculation between 1 kilometer per hour and 645 knots?

Performing the inverse calculation of the relationship between units, we obtain that 1 kilometer per hour is 0.00083714233 times 645 knots.

Which is the same to say that 645 knots is 1194.54 kilometers per hour.

Six hundred forty-five knots equals to one thousand one hundred ninety-four kilometers per hour. *Approximation

A kilometer per hour is zero times six hundred forty-five knots. *Approximation