3 1/2 cups 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. If a recipe calls for sifted powdered sugar, weigh out 4 ounces of sifted powdered sugar to equal 1 dry measuring cup.
How many cups of powdered sugar are in 2 pounds?
8.11 ( 8) cups of powdered sugar equal 2 pounds. (*) or, to be exact, 8.1066504738704 US cups. All statistics are approximate.