1 Cup Powdered sugar in Grams
1 cup of powdered sugar weighs:
120 g
US cup (240 ml)
125 g
Metric / AU cup (250 ml)
American recipes mean the 240 ml cup; Australian, British and New Zealand recipes mean the 250 ml metric cup. If the recipe does not say, the cuisine usually tells you — see the full cups to grams guide.
Powdered sugar — icing sugar in the UK and Australia, confectioners' sugar in older American books — is light and full of air, at about 120 g per cup. It also clumps, which is why recipes so often ask for it sifted.
Icing sugar (powdered) cup to gram chart
| Cups | US (240 ml) | Metric (250 ml) |
|---|---|---|
| ¼ cup | 30 g | 31 g |
| ⅓ cup | 40 g | 42 g |
| ½ cup | 60 g | 63 g |
| ⅔ cup | 80 g | 83 g |
| ¾ cup | 90 g | 94 g |
| 1 cup | 120 g | 125 g |
| 1½ cups | 180 g | 188 g |
| 2 cups | 240 g | 250 g |
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= 125 g
Frequently asked questions
How many grams is 1 cup of powdered sugar?
1 US cup of powdered sugar is 120 g. In an Australian, UK or NZ metric cup (250 ml) it is 125 g. Weighing is more accurate than measuring by volume.
How many grams is half a cup of powdered sugar?
Half a US cup of powdered sugar is 60 g, and three-quarters of a cup is 90 g.
Should I sift powdered sugar before or after measuring?
It changes the answer, so follow the recipe's wording. "1 cup sifted" means sift first, then measure, and the cup will be lighter. "1 cup, sifted" means measure first, then sift. When in doubt, weigh it — 120 g either way.
Is icing sugar the same as powdered sugar?
Yes. Icing sugar (UK, Australia, NZ), powdered sugar and confectioners' sugar are the same product: sugar ground to a fine powder, usually with a little cornflour added to stop it caking.