Powdered sugar conversion chart
| Food / method | Grams / US cup | Source portion |
|---|---|---|
| Sugars, powdered · cup sifted | 100g | 1 cup sifted = 100g (source cup 236.6mL) |
| Sugars, powdered · cup unsifted | 120g | 1 cup unsifted = 120g (source cup 236.6mL) |
| US cups | Grams |
|---|---|
| ¼ | 25 g |
| ⅓ | 33.3 g |
| ½ | 50 g |
| ⅔ | 66.7 g |
| ¾ | 75 g |
| 1 | 100 g |
| 1½ | 150 g |
| 2 | 200 g |
Tablespoons and teaspoons
1 US tablespoon ≈ 6.3 g. 1 US teaspoon ≈ 2.1 g.
These values use 16 US tablespoons or 48 US teaspoons per cup. Australian tablespoons and metric cups use different volumes.
Measurement basis
Food measured: Sugars, powdered
1 US customary cup ≈ 100g. Sugars, powdered · cup sifted. Source portion: 1 cup sifted = 100g. https://fdc.nal.usda.gov/food-details/169656/nutrients
This value is for sifted powdered sugar. USDA also lists 120g for one unsifted cup; use the method specified in your recipe.
For cups to grams, multiply the number of cups by 100. For grams to cups, divide the weight by 100. Results are rounded; a scale gives a more consistent weight than a measuring cup.

