300g Powdered Sugar in Cups
300 grams of powdered sugar is 2½ cups — 120g per US cup. Large powdered-sugar weights are for layer-cake frostings and royal icing, where the sugar-to-fat ratio decides whether the icing sets or slumps.
How many cups is 300g of powdered sugar?
300 grams of powdered sugar equals:
Measuring by hand? That is 2 cups + 8 tablespoons. It is about 60% of a 500 g bag of powdered sugar.
Powdered sugar clumps and compacts in the bag. Sift or whisk it first, then spoon it into the cup — do not tap the cup down.
Grams to Cups Converter
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Dedicated conversion guides use the default US customary cup.
Applies to this page only — the database value (120g per US cup) is unchanged.
300 grams of Powdered Sugar is about 2½ cups, using a 236.588 millilitre cup at 120 grams per cup.
300g of powdered sugar vs other ingredients
Grams measure weight and cups measure volume, so the same 300 grams fills a different amount of cup for every ingredient:
| Ingredient | 300g in cups | g per cup |
|---|---|---|
| Powdered Sugar | 2½ cups | 120 |
| All-Purpose Flour | 2⅜ cups | 125 |
| Granulated Sugar | 1½ cups | 200 |
| Butter | 1⅓ cups | 227 |
See all 300g conversions on the 300 grams to cups chart.
Nearby powdered sugar amounts
| Grams of powdered sugar | Cups | Tablespoons |
|---|---|---|
| 255g | 2⅛ cups | 34 tbsp |
| 260g | 2⅛ cups | 35 tbsp |
| 275g | 2⅓ cups | 37 tbsp |
| 280g | 2⅓ cups | 37 tbsp |
| 320g | 2⅔ cups | 43 tbsp |
| 340g | 2⅞ cups | 45 tbsp |
| 350g | 2⅞ cups | 47 tbsp |
| 360g | 3 cups | 48 tbsp |
Full ladder on the powdered sugar grams to cups chart.
Frequently Asked Questions
300 grams of powdered sugar is 2½ cups. In kitchen measures that is 2 cups + 8 tablespoons, worked out from 120 grams per US cup.
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