640 ounces (oz) to pounds (lbs)

640 ounces = 40 pounds

To convert 640 ounces to pounds, divide 640 ounces by the conversion factor 16 (since 1 ounce equals 1/16 pounds).

The conversion formula is :
pounds = ounces ÷ 16

Here's the calculation to convert 640 oz to lbs :
640 ounces ÷ 16 = 40 pounds

Therefore, 640 ounces is equal to 40 pounds

An ounce is a unit of mass in the British imperial and US customary systems of measurement, equal to exactly 28.3495 grams. It is abbreviated using the symbol oz (e.g. 640 oz).

A pound is a unit of mass in the British imperial and US customary systems of measurement, equal to exactly 0.453592 kilograms or 16 ounces. It is abbreviated using the symbol lbs (e.g. 40 lbs).