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

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

Performing the inverse calculation of the relationship between units, we obtain that 1 ounce is 0.043952749 times 645 grams.

Which is the same to say that 645 grams is 22.751705 ounces.

Six hundred forty-five grams equals to twenty-two ounces. *Approximation

A ounce is zero times six hundred forty-five grams. *Approximation