Powdered sugar (icing sugar): cups to grams
Powdered, confectioners’ or icing sugar weighs only about 113 g per cup, a little more than half the weight of granulated sugar, because it is a fine powder full of air with a few percent of cornstarch. Swapping the two by volume ruins a frosting.
1 cup powdered sugar (icing sugar) = 113 g · 1 tbsp = 7.1 g · 100 g = 0.88 cups
Based on 113 g per US cup of powdered sugar (icing sugar), spooned and levelled. Real-world cups vary by about ±10 % for powders.
How to measure powdered sugar (icing sugar)
Spoon into the cup and level; sift first if the recipe says so (sifted it is closer to 100 g). For glazes, weigh: 113 g sugar to 15 mL liquid is a typical ratio.
Weight is the only measure that does not depend on the container or on how the ingredient was filled. The figure of 113 g per US cup comes from the King Arthur Baking ingredient weight chart; other charts differ by a few percent, which is within the spread between two cooks filling the same cup.
Cups of powdered sugar (icing sugar) to grams
| Cups | Volume | Weight | Ounces |
|---|---|---|---|
| ⅛ cup | 30 mL | 14 g | 0.5 oz |
| ¼ cup | 59 mL | 28 g | 1 oz |
| ⅓ cup | 79 mL | 38 g | 1.3 oz |
| ½ cup | 118 mL | 57 g | 2 oz |
| ⅔ cup | 158 mL | 75 g | 2.7 oz |
| ¾ cup | 177 mL | 85 g | 3 oz |
| 1 cup | 237 mL | 113 g | 4 oz |
| 1½ cups | 355 mL | 170 g | 6 oz |
| 2 cups | 473 mL | 226 g | 8 oz |
| 3 cups | 710 mL | 339 g | 12 oz |
| 4 cups | 946 mL | 452 g | 15.9 oz |
Spoons and metric measures
| Measure | Weight |
|---|---|
| 1 teaspoon | 2.4 g |
| 1 tablespoon | 7.1 g |
| 2 tablespoons | 14.1 g |
| 4 tablespoons (¼ cup) | 28 g |
| Metric cup, 250 mL | 119 g |
| 100 mL | 48 g |
Grams of powdered sugar (icing sugar) to cups
| Weight | US cups | Tablespoons | Ounces |
|---|---|---|---|
| 25 g | 0.22 cups | 3.5 tbsp | 0.88 oz |
| 50 g | 0.44 cups | 7.1 tbsp | 1.76 oz |
| 75 g | 0.66 cups | 10.6 tbsp | 2.65 oz |
| 100 g | 0.88 cups | 14.2 tbsp | 3.53 oz |
| 125 g | 1.11 cups | 17.7 tbsp | 4.41 oz |
| 150 g | 1.33 cups | 21.2 tbsp | 5.29 oz |
| 200 g | 1.77 cups | 28.3 tbsp | 7.05 oz |
| 250 g | 2.21 cups | 35.4 tbsp | 8.82 oz |
| 300 g | 2.65 cups | 42.5 tbsp | 10.58 oz |
| 400 g | 3.54 cups | 56.6 tbsp | 14.11 oz |
| 500 g | 4.42 cups | 70.8 tbsp | 17.64 oz |
Related ingredients
Frequently asked questions
About 113 g when spooned into the cup and levelled. Source: King Arthur Baking.
100 g of powdered sugar (icing sugar) is 0.88 US cups, or about 14.2 tablespoons.
7.1 g, since a US tablespoon is one sixteenth of a cup. A teaspoon is 2.4 g.
No. This page uses the US cup of 236.6 mL. The metric cup of 250 mL used in Australia, New Zealand and most of Europe holds 119 g of powdered sugar (icing sugar), about 6 % more. Old British recipes used a 284 mL cup.