Powdered sugar, Cups to Grams & Grams to Cups
1 cup of powdered sugar = 120 grams · 100g = 0.83 cups
Also known as icing sugar or confectioners’ sugar.
Powdered sugar — also called confectioners' or icing sugar — is granulated sugar ground to a fine powder with a little cornstarch added to prevent caking. It is light and clumps readily, so a cup is about 120g and recipes often call for it sifted. It dissolves instantly, making it the choice for icings, glazes and dusting.
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Powdered sugar cups to grams table
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/8 | 15 g | 0.53 oz | 2 |
| 1/4 | 30 g | 1.06 oz | 4 |
| 1/3 | 40 g | 1.41 oz | 5.33 |
| 1/2 | 60 g | 2.12 oz | 8 |
| 2/3 | 80 g | 2.82 oz | 10.7 |
| 3/4 | 90 g | 3.17 oz | 12 |
| 1 | 120 g | 4.23 oz | 16 |
| 1 1/2 | 180 g | 6.35 oz | 24 |
| 2 | 240 g | 8.47 oz | 32 |
| 3 | 360 g | 12.7 oz | 48 |
Powdered sugar grams to cups table
Working the other way? Here's how many cups common gram weights of powdered sugar come to, handy when a recipe lists powdered sugar in grams but you only have cup measures.
| Grams | Cups | Ounces | Tablespoons |
|---|---|---|---|
| 25 g | 0.21 | 0.88 oz | 3.33 |
| 50 g | 0.42 | 1.76 oz | 6.67 |
| 75 g | 0.62 | 2.65 oz | 10 |
| 100 g | 0.83 | 3.53 oz | 13.3 |
| 125 g | 1.04 | 4.41 oz | 16.7 |
| 150 g | 1.25 | 5.29 oz | 20 |
| 175 g | 1.46 | 6.17 oz | 23.3 |
| 200 g | 1.67 | 7.05 oz | 26.7 |
| 225 g | 1.88 | 7.94 oz | 30 |
| 250 g | 2.08 | 8.82 oz | 33.3 |
| 300 g | 2.5 | 10.6 oz | 40 |
| 350 g | 2.92 | 12.3 oz | 46.7 |
| 400 g | 3.33 | 14.1 oz | 53.3 |
| 500 g | 4.17 | 17.6 oz | 66.7 |
Powdered sugar: US, metric & UK cups compared
A “cup” isn’t the same size everywhere, so 1 cup of powdered sugar weighs a different number of grams depending on which cup your recipe uses. The US cup is 236.6 ml, while Australia, New Zealand, Canada and modern UK recipes use a 250 ml metric cup. Here’s 1 cup of powdered sugar in each:
| Cup standard | Size | 1 cup powdered sugar | Used in |
|---|---|---|---|
| US cup | 237 ml | 120 g | United States (most US recipe sites) |
| Metric cup | 250 ml | 127 g | Australia, NZ, Canada & modern UK |
| UK imperial cup | 284 ml | 144 g | Older British recipes |
| Japanese cup | 200 ml | 101 g | Japan |
Unless a recipe says otherwise, US recipes mean the US cup and Australian/UK recipes mean the 250 ml metric cup. The tables higher up this page use the US cup.
Related ingredients
Quick reference: Powdered sugar in grams
- ⅛ cup powdered sugar = 15g
- ¼ cup powdered sugar = 30g
- ⅓ cup powdered sugar = 40g
- ½ cup powdered sugar = 60g
- ⅔ cup powdered sugar = 80g
- ¾ cup powdered sugar = 90g
- 1 cup powdered sugar = 120g
- 2 cups powdered sugar = 240g
How many cups is 100g, 200g or 300g of powdered sugar?
Because one cup of powdered sugar weighs about 120 grams, you can convert any weight to cups by dividing by 120. So 100g of powdered sugar is about 0.83 cups, 200g is about 1.67 cups, 250g is about 2.08 cups, and 300g is about 2.5 cups. For any other amount, type the grams straight into the converter above and switch it to show cups.
How to measure powdered sugar accurately
For the most reliable baking results, weigh powdered sugar (also called icing sugar or confectioners’ sugar) on a kitchen scale rather than scooping by volume. One US cup of powdered sugar weighs about 120 grams (4.23 oz), but the exact figure changes with how tightly it's packed and the brand. Scooping straight from the bag compacts powdered sugar and can leave you 15 to 20% over, so spoon it into the cup and level it off for the closest match to the figures above. Use the tables for quick reference, or the converter for any custom amount in cups, grams, ounces or tablespoons.
Tip: Sift powdered sugar before measuring or before adding to a glaze; even sealed bags develop lumps that won't smooth out later.
Powdered sugar conversions: common questions
How many grams are in a cup of powdered sugar?
One US cup of powdered sugar weighs approximately 120 grams (4.23 oz).
How many grams in half a cup of powdered sugar?
Half a cup (½ cup) of powdered sugar weighs approximately 60 grams.
How many grams in a quarter cup of powdered sugar?
A quarter cup (¼ cup) of powdered sugar weighs approximately 30 grams.
How do I convert powdered sugar from cups to grams?
Multiply the number of cups by 120. For example, 2 cups of powdered sugar = 240 grams, and ¾ cup = 90 grams.
How many cups is 100g of powdered sugar?
100 grams of powdered sugar is about 0.83 cups. 200g is about 1.67 cups and 300g is about 2.5 cups, since 1 cup weighs 120 grams.
How many grams in a metric (Australian) cup of powdered sugar?
One 250 ml metric cup of powdered sugar, used in Australia, New Zealand, Canada and modern UK recipes, weighs about 127 grams, compared with 120 grams for a 236.6 ml US cup.