Powdered Sugar — Cups to Grams
1 cup powdered sugar = 120 grams (unsifted)
1 cup Powdered Sugar = 120 grams
16 tablespoons48 teaspoons
Quick Conversion Table — Powdered Sugar
| Cups | Grams | Tablespoons | Teaspoons |
|---|---|---|---|
| ¼ | 30 g | 4 tbsp | 12 tsp |
| ⅓ | 40 g | 5.33 tbsp | 16 tsp |
| ½ | 60 g | 8 tbsp | 24 tsp |
| ⅔ | 80 g | 10.7 tbsp | 32 tsp |
| ¾ | 90 g | 12 tbsp | 36 tsp |
| 1 | 120 g | 16 tbsp | 48 tsp |
| 1½ | 180 g | 24 tbsp | 72 tsp |
| 2 | 240 g | 32 tbsp | 96 tsp |
| 3 | 360 g | 48 tbsp | 144 tsp |
| 4 | 480 g | 64 tbsp | 192 tsp |
How to Measure Powdered Sugar in Cups
Powdered sugar compacts very easily and should always be spooned into the measuring cup rather than scooped. For frostings and glazes where a smooth texture is critical, sift the sugar first, then spoon into the cup for a consistent 115-120 grams per cup.
Scooping powdered sugar directly from the bag can pack as much as 160 grams into a single cup — a 33% difference that will make your frosting overly sweet and stiff. Use the calculator above to convert cups to grams and eliminate this common baking mistake.
Pro tip: For perfect buttercream frosting, always weigh powdered sugar rather than measuring by cup. Even the spoon-and-level method introduces variation — weighing gives perfectly consistent results every time.
Powdered Sugar Conversion Table
| Cups | Grams | Ounces |
|---|---|---|
| ¼ cup | 30 g | 1.06 oz |
| ⅓ cup | 40 g | 1.41 oz |
| ½ cup | 60 g | 2.12 oz |
| ⅔ cup | 80 g | 2.82 oz |
| ¾ cup | 90 g | 3.17 oz |
| 1 cup | 120 g | 4.23 oz |
| 1½ cups | 180 g | 6.35 oz |
| 2 cups | 240 g | 8.47 oz |
| 3 cups | 360 g | 12.70 oz |
| 4 cups | 480 g | 16.93 oz |