Powdered Sugar Grams to Cups Converter
100g of unsifted powdered sugar is about 0.88 US cups, using our reference of 113g per cup.
Enter your weight below to convert another amount, and check whether your recipe asks you to sift before measuring.
Reference: King Arthur Baking's ingredient chart lists unsifted confectioners' sugar at 113g per cup. We use that weight for this site's US Customary setting. This converter does not use a separate sifted-sugar reference.
Powdered sugar grams to cups
The chart uses 113g of unsifted powdered sugar per US Customary cup. Answers are approximate and displayed to a maximum of two decimal places.
| Powdered sugar weight | Approximate US cups, unsifted |
|---|---|
| 25g | 0.22 |
| 50g | 0.44 |
| 75g | 0.66 |
| 100g | 0.88 |
| 113g | 1 |
| 125g | 1.11 |
| 150g | 1.33 |
| 175g | 1.55 |
| 200g | 1.77 |
| 225g | 1.99 |
| 250g | 2.21 |
| 300g | 2.65 |
| 350g | 3.1 |
| 400g | 3.54 |
| 500g | 4.42 |
| 750g | 6.64 |
| 1,000g | 8.85 |
These are decimal cups, not cup fractions. For example, 0.5 means ½ cup. The calculator's practical measuring suggestion gives an approximate combination of cups and spoons when you need one.
For a reference covering more ingredients, see our printable conversion chart.
Should I sift powdered sugar before measuring?
Follow the order stated in the recipe. These two instructions usually mean different things:
| Recipe wording | What to do |
|---|---|
| 1 cup powdered sugar, sifted | Measure a cup first, then sift that amount. |
| 1 cup sifted powdered sugar | Sift first, then measure a cup of the sifted sugar. |
Better Homes & Gardens explains this distinction. Sifting changes how the sugar fills a cup, so do not assume that a cup measured before sifting has the same weight as one measured afterward.
Our chart is for unsifted sugar. If your recipe calls for a cup measured after sifting, use its own weight equivalent when available. We do not apply an invented adjustment to turn an unsifted cup into a sifted one.
If the recipe already gives grams, weigh the requested amount and sift as directed. Sifting does not change the target weight; transfer the measured sugar without leaving part of it behind.
How to measure unsifted powdered sugar
Use a dry measuring cup. Spoon in the sugar and level the top without pressing it down. Betty Crocker's buttercream guide also uses the spoon-and-level method for measuring powdered sugar.
Do not pack it like brown sugar. Keep your method consistent, especially when measuring several cups for frosting. If your recipe gives a weight and you have a scale, weighing avoids the uncertainty of how loosely each cup is filled.
How to convert powdered sugar grams to cups
For this page's US Customary reference:
Cups = grams ÷ 113
For example, 250 ÷ 113 = about 2.21 US cups. Keep the full value during the calculation and round only the final answer.
To work in the other direction, multiply cups by 113. That gives 56.5g for ½ cup or 226g for 2 cups. Switch the calculator's direction above, or use the cups-to-grams converter with unsifted powdered sugar selected.
Is confectioners' sugar the same as powdered sugar?
These names refer to the same type of sugar in this guide. Domino Sugar's FAQ explains its change from the name confectioners' sugar to powdered sugar. Recipes may also call it icing sugar; check the product description and the recipe's instructions.
Do not use this conversion for granulated or packed brown sugar. Use our granulated sugar converter or brown sugar converter for those ingredients. Converting a weight does not make different sugars interchangeable in a recipe.
Why might another chart give a different answer?
Check whether it uses sifted or unsifted sugar, the same cup size and the same reference weight. Follow your recipe's own gram equivalent when it supplies one.
This page's table stays on the US Customary setting. The calculator also supports 240mL and 250mL cups by scaling the baseline in proportion to cup volume. For a 250mL metric cup, our estimate is 119.4g, not a separately measured source value.
See our cup-size guide to choose a setting and our methodology for the calculation and rounding rules.