With this information, you can calculate the quantity of pounds 640 ounces is equal to.

¿What is the inverse calculation between 1 pound and 640 ounces?

Performing the inverse calculation of the relationship between units, we obtain that 1 pound is 0.025 times 640 ounces.

Which is the same to say that 640 ounces is 40 pounds.

Six hundred forty ounces equals to forty pounds. *Approximation

A pound is zero times six hundred forty ounces. *Approximation