Powdered Sugar to Cups
Powdered Sugar weighs approximately 120 grams per US customary cup. Use the calculator below to convert any amount of powdered sugar between grams and cups.
About Powdered Sugar
Powdered sugar (confectioners' sugar) is finely ground sugar with cornstarch, used for icings and dusting. One US cup weighs about 120 grams because it is very light.
Whether you are scaling a recipe up, substituting an ingredient, or converting a recipe from metric to US measurements, having an accurate grams-per-cup value for powdered sugar removes the guesswork from your cooking. Bookmark this page for quick reference whenever powdered sugar appears in a recipe.
How much does a cup of powdered sugar weigh?
A standard US cup of powdered sugar weighs about 120 grams (4.23 ounces). That makes it almost the same weight as a cup of all-purpose flour, and lighter than a cup of granulated sugar (200 g). This is why a converter that uses the same factor for every ingredient will give wrong answers: powdered sugar has its own density, and recipes depend on it.
Weight of common powdered sugar measures
| Measure | Grams | Ounces |
|---|---|---|
| 1 teaspoon of powdered sugar | 2.5 g | 0.09 oz |
| 1 tablespoon of powdered sugar | 7.5 g | 0.26 oz |
| 1/4 cup of powdered sugar | 30 g | 1.06 oz |
| 1/3 cup of powdered sugar | 40 g | 1.41 oz |
| 1/2 cup of powdered sugar | 60 g | 2.12 oz |
| 2/3 cup of powdered sugar | 80 g | 2.82 oz |
| 3/4 cup of powdered sugar | 90 g | 3.17 oz |
| 1 cup of powdered sugar | 120 g | 4.23 oz |
| 2 cups of powdered sugar | 240 g | 8.47 oz |
Values are reference weights for level, unpacked measures unless the ingredient is normally packed. Brand, moisture, temperature and how firmly you fill the cup can shift the result by a few percent, so for precision baking weigh powdered sugar on a kitchen scale and use the cup figure only as a guide. To understand why these numbers differ between ingredients, read our guide on why a cup of flour is not a cup of sugar, or see why weighing beats measuring cups.
Powdered Sugar Conversion Table
| Grams | Cups | Ounces |
|---|---|---|
| 25 g | 0.21 cups | 0.88 oz |
| 50 g | 0.42 cups | 1.76 oz |
| 75 g | 0.63 cups | 2.65 oz |
| 100 g | 0.83 cups | 3.53 oz |
| 125 g | 1.04 cups | 4.41 oz |
| 150 g | 1.25 cups | 5.29 oz |
| 175 g | 1.46 cups | 6.17 oz |
| 200 g | 1.67 cups | 7.05 oz |
| 225 g | 1.88 cups | 7.94 oz |
| 250 g | 2.08 cups | 8.82 oz |
| 300 g | 2.50 cups | 10.58 oz |
| 400 g | 3.33 cups | 14.11 oz |
| 500 g | 4.17 cups | 17.64 oz |
Frequently Asked Questions
- help_outlineHow many cups is 100 grams of powdered sugar?
100 grams of powdered sugar is approximately 0.8333 cups, based on the standard reference of 120 grams per US cup.
- help_outlineHow many grams is 1 cup of powdered sugar?
1 US cup of powdered sugar weighs approximately 120 grams. Always level off the cup for the most accurate result.
- help_outlineIs the powdered sugar cups conversion accurate for all brands?
The 120 g/cup value is a widely accepted average. Small variations can occur between brands and depending on how firmly the ingredient is packed.