With this information, you can calculate the quantity of ounces 645 pounds is equal to.

¿What is the inverse calculation between 1 ounce and 645 pounds?

Performing the inverse calculation of the relationship between units, we obtain that 1 ounce is 9.6899225e-05 times 645 pounds.

Which is the same to say that 645 pounds is 10320 ounces.

Six hundred forty-five pounds equals to ten thousand three hundred twenty ounces. *Approximation

A ounce is nine times six hundred forty-five pounds. *Approximation