100 grams of powdered sugar is about 0.83 cups, and 1 cup weighs about 120 grams. Use the converter below for any amount, or check the full grams-to-cups chart.
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100 grams of powdered sugar is about 0.83 cups, based on 120 grams per cup. Because grams measure weight and cups measure volume, the exact number of cups depends on the ingredient’s density — and powdered sugar weighs about 120 grams in a full cup. For the most reliable results in baking, weigh it on a digital scale.
Quick reference for powdered sugar at 120 grams per cup.
| Grams | Cups | Nearest fraction |
|---|---|---|
| 30 g | 0.25 cups | 1/4 cup |
| 50 g | 0.42 cups | ≈ 1/2 cup |
| 100 g | 0.83 cups | ≈ 7/8 cup |
| 150 g | 1.25 cups | 1 1/4 cups |
| 200 g | 1.67 cups | 1 2/3 cups |
| 250 g | 2.08 cups | ≈ 2 cups |
| 500 g | 4.17 cups | ≈ 4 cups |
Powdered sugar (also called confectioners’ or icing sugar) is very light and clumps easily, so how you measure it matters. Sift it first, then spoon it into the cup and level it off — don’t scoop or pack. One cup weighs about 120 grams, the same as all-purpose flour.
100 grams of powdered sugar is about 0.83 cups, based on 120 grams per cup.
One cup of powdered sugar is about 120 grams.
250 grams of powdered sugar is about 2.08 cups, based on 120 grams per cup.
No. Powdered sugar is much lighter — about 120 grams per cup — while granulated sugar is 200 grams per cup. They are not interchangeable by volume.
Yes, if it looks lumpy. Sifting removes clumps so the sugar settles evenly, giving a more accurate and consistent cup measurement.