Batch Scaling Around ⅓ US Cup Powdered / Confectioners' Sugar
| Batch Scale | Weight (g / oz) | US Cups & Spoons | Metric (mL) |
|---|---|---|---|
| Half Batch (0.5×) | 20g (0.71 oz) | 2 tbsp + 2 tsp | 39.4 mL |
| Standard (1×) | 40g (1.41 oz) | ⅓ cup | 78.9 mL |
| 1.5× Batch | 60g (2.12 oz) | ½ cup | 118.3 mL |
| Double Batch (2×) | 80g (2.82 oz) | ⅔ cup | 157.7 mL |
| Triple Batch (3×) | 120g (4.23 oz) | 1 cup | 236.6 mL |
Measuring ⅓ US Cup of Powdered / Confectioners' Sugar in the Kitchen
Measured unsifted spooned at a verified bulk density of 120g per US cup, ⅓ US cup of powdered / confectioners' sugar weighs 40 grams (1.41 ounces). Measured using the sifted method (100g/cup), that same ⅓ cup holds 33.3g — a 6.7g difference in your mixing bowl.
Spoon gently into the measuring cup and level flat. If your recipe calls for sifted powdered sugar, measure after sifting (100g/cup) or weigh directly.
Source note: USDA FoodData Central #169658 & Domino Confectioners 10-X specifications
Frequently Asked Questions
How many grams is ⅓ cup of powdered / confectioners' sugar? ▾
⅓ US Cup of powdered / confectioners' sugar measured unsifted spooned weighs 40 grams (1.41 ounces).
Why does powdered sugar contain cornstarch? ▾
Commercial confectioners sugar contains about 3% cornstarch as an anti-caking agent to prevent the microscopic particles from clumping.
Why do recipes specify sifted versus unsifted powdered sugar? ▾
Sifted powdered sugar traps significant air, dropping cup weight from 120g down to 100g—a 20% reduction in sweetness.