Powdered Sugar Grams to Cups
One cup of powdered (confectioners') sugar weighs just 120 grams — barely more than half what granulated sugar weighs per cup, because it is mostly air between microscopic particles.
Powdered sugar compacts in the bag, so recipes assume unsifted, lightly spooned cups. If a recipe says "1 cup sifted powdered sugar," sift first, then measure — sifted cups weigh about 10% less. Frosting recipes are forgiving; glazes and macarons are not, so weigh when it matters.
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Common gram amounts of powdered sugar converted to cups and tablespoons:
| Grams | Cups | Tablespoons |
|---|---|---|
| 50g | ⅜ cups | 7 tbsp |
| 75g | ⅝ cups | 10 tbsp |
| 80g | ⅔ cups | 11 tbsp |
| 100g | ⅞ cups | 13 tbsp |
| 120g | 1 cups | 16 tbsp |
| 125g | 1 cups | 17 tbsp |
| 150g | 1¼ cups | 20 tbsp |
| 175g | 1½ cups | 23 tbsp |
| 200g | 1⅔ cups | 27 tbsp |
| 225g | 1⅞ cups | 30 tbsp |
| 250g | 2⅛ cups | 33 tbsp |
| 300g | 2½ cups | 40 tbsp |
| 350g | 2⅞ cups | 47 tbsp |
| 400g | 3⅓ cups | 53 tbsp |
| 450g | 3¾ cups | 60 tbsp |
| 500g | 4⅛ cups | 67 tbsp |
| 600g | 5 cups | 80 tbsp |
| 750g | 6¼ cups | 100 tbsp |
| 1000g | 8⅓ cups | 133 tbsp |
Each gram amount links to a page covering that conversion for all ingredients.
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Frequently Asked Questions
100 grams of powdered sugar is about 0.83 cups — roughly ¾ cup plus 1½ tablespoons.
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