Cooking unit converter
Powdered sugar cups to grams converter
Use this powdered sugar cups to grams converter when a recipe gives volume but you want the repeatability of a kitchen scale. The page is pre-filled with powdered sugar and uses 120 grams per US cup as the working density, so cup, tablespoon, teaspoon, milliliter, fluid ounce, and gram conversions stay tied to the ingredient instead of a generic liquid assumption. Powdered sugar can clump or aerate; sift first when the recipe depends on a smooth icing texture. It is most useful for frosting, glaze, dusting, buttercream, and confectioners' sugar substitutions, especially when scaling a recipe up or down before mixing.
Quick conversion table
| US cup | Gram |
|---|---|
| 1 cup | 120 g |
| 5 cup | 600 g |
| 10 cup | 1,200 g |
| 25 cup | 3,000 g |
| 50 cup | 6,000 g |
| 100 cup | 12,000 g |
Powdered sugar conversion data
- Grams per cup
- 120 g
- Grams per tablespoon
- 7.5 g
- Grams per teaspoon
- 2.5 g
- Best for
- frosting, glaze, dusting, buttercream, and confectioners' sugar substitutions
- Measuring note
- Powdered sugar can clump or aerate; sift first when the recipe depends on a smooth icing texture.
- Source
- King Arthur Baking Ingredient Weight Chart, accessed 2026-05-06
Useful notes
Why ingredient matters
A cup of flour and a cup of butter do not weigh the same. Pick an ingredient when converting to or from grams.
Common kitchen units
Cups, tablespoons, teaspoons, milliliters, fluid ounces, and grams are kept in one fast form.
Frequently asked questions
How many grams are in 1 cup of powdered sugar?
This page uses 120 grams for 1 US cup of powdered sugar. Cup weights can vary by brand, grind, moisture, and packing method, so weigh the ingredient when precision matters.
Can I convert powdered sugar tablespoons and teaspoons to grams here?
Yes. Choose tablespoons or teaspoons in the unit menu and keep powdered sugar selected as the ingredient. The calculator uses the same ingredient density for the smaller volume units.
Why is powdered sugar different from water in a cooking converter?
Powdered sugar has its own density, so a cup does not weigh the same as a cup of water. That is why this page keeps a dedicated ingredient setting instead of using one universal cups-to-grams factor.
What measuring note should I remember for powdered sugar?
Powdered sugar can clump or aerate; sift first when the recipe depends on a smooth icing texture.