Batch Scaling Around 300g Powdered / Confectioners' Sugar
| Batch Scale | Weight (g / oz) | US Cups & Spoons | Metric (mL) |
|---|---|---|---|
| Half Batch (0.5×) | 150g (5.29 oz) | 1 ¼ cups | 295.7 mL |
| Standard (1×) | 300g (10.58 oz) | 2 ½ cups | 591.5 mL |
| 1.5× Batch | 450g (15.87 oz) | 3 ¾ cups | 887.2 mL |
| Double Batch (2×) | 600g (21.16 oz) | 5 cups | 1182.9 mL |
| Triple Batch (3×) | 900g (31.75 oz) | 7 ½ cups | 1774.4 mL |
Measuring 300g of Powdered / Confectioners' Sugar in the Kitchen
Because 1 US Customary Cup (236.6 mL) of powdered / confectioners' sugar weighs 120g when measured unsifted spooned, 300 Grams (300g) translates to 2.50 US cups (2 ½ cups). By contrast, using the sifted measure (100g/cup — a 20g per-cup shift), 300g occupies 3 cups (3.00 cups).
Without a kitchen scale, measure 2 ½ cups (40 tablespoons total) using unsifted spooned technique. 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 cups is 300 grams of powdered / confectioners' sugar? ▾
300 grams of powdered / confectioners' sugar (unsifted spooned, 120g per US cup) equals 2 ½ cups (2.50 US Customary Cups, 2.37 Metric 250 mL cups, or 40 tablespoons).
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.