There are roughly 11 1/4 cups of granulated white sugar in a 5-pound bag. By volume, different sugar kinds may have more or less. When measuring confectioner’s sugar, a 5-pound bag provides 18 3/4 cups and 12 1/2 cups when measuring brown sugar.
Different measuring preparations, such as sifting confectioner’s sugar or packing brown sugar, will affect the amount of cups retrieved from a bag of sugar. A tiny kitchen scale can be used to calculate the precise amount of sugar to add if exact proportions are required and the recipe provides ingredient weights.