Powdered Sugar Grams to Cups Converter
Convert powdered sugar between grams, cups, tablespoons, teaspoons, and ounces for frosting, buttercream, glaze, icing, dusting, and baking recipes.
Convert powdered sugar measurements
Choose sifted, spooned, or packed powdered sugar so the cup estimate matches how your recipe is measured.
A spooned cup of powdered sugar is estimated at about 120 grams. For frosting, weigh the sugar when you want repeatable sweetness and texture.
Powdered sugar grams to cups chart
| Powdered sugar | Spooned cups | Common use |
|---|---|---|
| 30 g | ¼ cup | Small glaze or dusting |
| 60 g | ½ cup | Quick icing or whipped cream |
| 100 g | 0.83 cup | Small frosting batch |
| 120 g | 1 cup | Standard recipe cup |
| 240 g | 2 cups | Buttercream or cake frosting |
Why powdered sugar cup weights vary
Powdered sugar traps air and settles easily. A sifted cup is lighter, a spooned cup is a practical everyday estimate, and a packed cup weighs more.
If your recipe says “sifted powdered sugar,” choose the sifted option. If it simply lists cups of powdered sugar, spooned is usually the best default.
Powdered sugar conversion FAQ
How many grams is 1 cup of powdered sugar?
One spooned cup of powdered sugar is about 120 grams. Sifted powdered sugar is closer to 100 grams per cup, and packed powdered sugar can be around 140 grams per cup.
How many cups is 100 grams of powdered sugar?
Using the spooned estimate, 100 grams of powdered sugar is about 0.83 cup. With sifted powdered sugar, it is about 1 cup.
How many tablespoons are in a cup of powdered sugar?
There are 16 tablespoons in 1 cup. With the spooned 120 gram estimate, 1 tablespoon of powdered sugar is about 7.5 grams.
Can I use this for confectioners sugar or icing sugar?
Yes. Powdered sugar, confectioners sugar, and icing sugar are usually interchangeable for kitchen measuring, though exact density can vary by brand and whether it is sifted.