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450g Caster / Superfine Sugar = 2 cups

450 grams of caster / superfine sugar equals 2 cups (2.00 US Customary cups, 1.89 Metric 250 mL cups, 473.2 mL, 32 tablespoons, or 15.87 oz) when measured poured & leveled at a verified density of 225g per US Customary cup.

Exact decimal volume: 2.00 US Customary Cups • 1.89 Metric Cups (250 mL) • 32 tbsp • 15.87 oz

Batch
Measuring density
Converted Measure
450 g Caster / Superfine Sugar (poured & leveled) =
2 US Cups
Physical scoop breakdown2.00 cups
1 cup
1 cup
Edit either side to reverseCaster Sugar chart →
Grams
450 g
Ounces
15.87 oz
US Cups
2 cups
Metric (250mL)
1.89 c
Tablespoons
32 tbsp
Milliliters
473.2 mL

Kitchen note: Test-kitchen baseline uses poured & leveled (225g/cup). Switching to spooned into cup (215g/cup) changes each cup by 10g—use the packing toggle on the scale bench to match your recipe.

Batch Scaling Around 450g Caster / Superfine Sugar

Batch scaling conversion table around 450g of Caster / Superfine Sugar (0.5× to 3× recipe batches in grams, ounces, US cups, and milliliters)
Batch Scale Weight (g / oz) US Cups & Spoons Metric (mL)
Half Batch (0.5×) 225g (7.94 oz) 1 cup 236.6 mL
Standard (1×) 450g (15.87 oz) 2 cups 473.2 mL
1.5× Batch 675g (23.81 oz) 3 cups 709.8 mL
Double Batch (2×) 900g (31.75 oz) 4 cups 946.4 mL
Triple Batch (3×) 1350g (47.62 oz) 6 cups 1419.5 mL

Measuring 450g 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, 450 Grams (450g) translates to 2.00 US cups (2 cups). By contrast, using the spooned into cup measure (215g/cup — a 10g per-cup shift), 450g occupies 2 cups + 1 tbsp + 1 ½ tsp (2.09 cups).

Without a kitchen scale, measure 2 cups (32 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 450 grams of caster / superfine sugar? ▾

450 grams of caster / superfine sugar (poured & leveled, 225g per US cup) equals 2 cups (2.00 US Customary Cups, 1.89 Metric 250 mL cups, or 32 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.