how many cups in 12 oz of powdered sugar?
We know that 1 cup of water weighs 8 ounces, but honey, as an example, is thicker than water, so 1 cup of honey actually weighs in at 12 ounces. Powdered sugar right out of the box or the plastic bag weighs 4 1/2 ounces per cup, so a 1-pound box (or 16 ounces) contains about 3 1/2 cups of powdered sugar.