Convert Powdered sugar: cups to oz
1 cup of Powdered sugar = 3.99 oz · Unsifted
Amount of Powdered sugar
Unsifted
Density: 0.478 g/ml · Powdered sugar · Unsifted
Powdered sugar: cups to oz at a glance
The amounts people ask for most, worked out for Powdered sugar.
How much Powdered sugar weighs
Every figure below is one measured number — 113 g per US cup — scaled. That is why this table and the converter above it cannot disagree.
One cup, side by side
Is this sifted or unsifted powdered sugar?
Unsifted — 113 g is powdered sugar measured straight from the box, which is the method behind King Arthur's figure. If a recipe tells you to sift before measuring, its cup is not this cup, and weighing is the only way to reconcile the two.
Source for Powdered sugar: King Arthur Baking · King Arthur Baking ingredient weight chart
Frequently asked questions
How many oz is 1 cup of Powdered sugar?
1 cup of Powdered sugar is 3.99 oz, because one US cup of Powdered sugar weighs 113 g. That single measured figure is the whole conversion — every other unit on this page is derived from it.
How many cups is 4 oz of Powdered sugar?
4 oz of Powdered sugar is 1 cup. It is the same conversion read backwards, so this page and its reverse always agree.
Is that ounces by weight, or fluid ounces?
By weight. dishscale's ounce is the international avoirdupois ounce, 28.3495 g, so one cup of Powdered sugar is 3.99 oz. A US fluid ounce is a volume and there are eight of them to the cup, so that same cup is 8 fl oz at the same time. The two readings coincide only for an ingredient that happens to weigh eight ounces to the cup.
Where does dishscale's figure for Powdered sugar come from?
One US cup of Powdered sugar is 113 g. The dataset records that as: “King Arthur Baking”. That is the King Arthur Baking ingredient weight chart. Every ingredient on the site carries the reference its weight came from, so any number here can be checked — and corrected if the source disagrees.