Batch Scaling Around ⅔ US Cup Caster / Superfine Sugar
| Batch Scale | Weight (g / oz) | US Cups & Spoons | Metric (mL) |
|---|---|---|---|
| Half Batch (0.5×) | 75g (2.65 oz) | ⅓ cup | 78.9 mL |
| Standard (1×) | 150g (5.29 oz) | ⅔ cup | 157.7 mL |
| 1.5× Batch | 225g (7.94 oz) | 1 cup | 236.6 mL |
| Double Batch (2×) | 300g (10.58 oz) | 1 ⅓ cups | 315.5 mL |
| Triple Batch (3×) | 450g (15.87 oz) | 2 cups | 473.2 mL |
Measuring ⅔ US Cup of Caster / Superfine Sugar in the Kitchen
Measured poured & leveled at a verified bulk density of 225g per US cup, ⅔ US cup of caster / superfine sugar weighs 150 grams (5.29 ounces). Measured using the spooned into cup method (215g/cup), that same ⅔ cup holds 143.3g — a 6.7g difference in your mixing bowl.
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 grams is ⅔ cup of caster / superfine sugar? ▾
⅔ US Cup of caster / superfine sugar measured poured & leveled weighs 150 grams (5.29 ounces).
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.