Powdered sugar: cups to grams
Powdered sugar, also called confectioners' sugar, is icing sugar with a little cornstarch added to stop it clumping. Because it is so light and fluffy, a cup weighs only about 113 g, a little over half the weight of a cup of granulated sugar.
Powdered sugar: cups to grams
| US cups | Grams |
|---|---|
| ⅛ cup | 15 g |
| ¼ cup | 30 g |
| ⅓ cup | 40 g |
| ½ cup | 55 g |
| ⅔ cup | 75 g |
| ¾ cup | 85 g |
| 1 cup | 115 g |
| 1½ cups | 170 g |
| 2 cups | 225 g |
| 3 cups | 340 g |
| 4 cups | 450 g |
Tablespoons and teaspoons
| Spoon | Grams |
|---|---|
| 1 tablespoon | 7 g |
| 2 tablespoons | 15 g |
| ¼ cup (4 tablespoons) | 30 g |
| 1 teaspoon | 2 g |
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Grams to cups
Going the other way, for a metric recipe in US cups:
| Grams | Cups of powdered sugar |
|---|---|
| 25 g | about 3½ tbsp |
| 50 g | about ½ cup |
| 100 g | about ⅞ cup |
| 125 g | about 1⅛ cups |
| 150 g | about 1⅓ cups |
| 200 g | about 1¾ cups |
| 250 g | about 2¼ cups |
| 300 g | about 2⅔ cups |
| 400 g | about 3½ cups |
| 500 g | about 4⅜ cups |
| 1 kg | about 8⅞ cups |
Sift after measuring
Measure first, then sift, unless the recipe says "1 cup sifted powdered sugar". Sifting first means less sugar fits in the cup.
Icing sugar is fine
UK and Australian icing sugar may not contain cornstarch, but it works the same in frostings and glazes.
Weights are for a level US cup (236.6 ml), spooned in, based on published baking ingredient-weight charts. Weighing will always be more accurate than any cup.