Batch Scaling Around 300g Caster / Superfine Sugar
| Batch Scale | Weight (g / oz) | US Cups & Spoons | Metric (mL) |
|---|---|---|---|
| Half Batch (0.5×) | 150g (5.29 oz) | ⅔ cup | 157.7 mL |
| Standard (1×) | 300g (10.58 oz) | 1 ⅓ cups | 315.5 mL |
| 1.5× Batch | 450g (15.87 oz) | 2 cups | 473.2 mL |
| Double Batch (2×) | 600g (21.16 oz) | 2 ⅔ cups | 630.9 mL |
| Triple Batch (3×) | 900g (31.75 oz) | 4 cups | 946.4 mL |
Measuring 300g of Caster / Superfine Sugar in the Kitchen
Because 1 US Customary Cup (236.6 mL) of caster / superfine sugar weighs 225g when measured poured & leveled, 300 Grams (300g) translates to 1.33 US cups (1 ⅓ cups). By contrast, using the spooned into cup measure (215g/cup — a 10g per-cup shift), 300g occupies 1 ⅓ cups + 1 tbsp (1.40 cups).
Without a kitchen scale, measure 1 ⅓ cups (21.33 tablespoons total) using poured & leveled technique. Pour and level flat. Because the micro-granules pack closer together than regular granulated sugar, 1 cup weighs a dense 225 grams.
Source note: British Baker standard (225g/cup) & Domino Superfine specifications
Frequently Asked Questions
How many cups is 300 grams of caster / superfine sugar? ▾
300 grams of caster / superfine sugar (poured & leveled, 225g per US cup) equals 1 ⅓ cups (1.33 US Customary Cups, 1.26 Metric 250 mL cups, or 21.33 tablespoons).
Why do British and Australian recipes call for caster sugar? ▾
Caster sugar dissolves almost immediately into egg whites and butter, preventing gritty meringues and dry cake crumbs.
Why does a cup of caster sugar weigh 225g while granulated weighs 200g? ▾
Smaller crystal size means tighter packing with significantly less empty airspace between granules.