Convert Caster Sugar from Cup (US) to Cup
How many cups is 1 US cup of caster sugar?
1 US cup of caster sugar (castor sugar) is 0.96 cups. 2 US cups of caster sugar is 1.92 cups. 1/2 US cup of caster sugar is 0.48 cups. 1/4 US cup (0.25 US cup) of caster sugar is 0.24 cups. Use the converter below for any amount.
- These figures use the metric cup (250 ml). A US cup is slightly smaller at 240 ml, so it holds a little less.
- These figures use the US cup (240 ml). A metric cup is slightly larger at 250 ml, so it holds a little more.
- Cup sizes are not standard worldwide, so the same cup of an ingredient can weigh more or less depending on the country. What is a cup measurement →
More about measuring Caster Sugar
Caster Sugar substitutes
Ran out? What to use instead of caster sugar →
No measuring cups? The tool below gets you close, and a measuring cup set keeps every batch the same.
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0.96 CupCaster Sugar Calculators & Baking Tools
Working with caster sugar? These tools handle the jobs a converter cannot.
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- Recipe Scaler Scale any recipe up or down and keep every ingredient in ratio.
Common Caster Sugar Conversions
Here are the most common caster sugar conversions from cups (US) to cups.
| Cups (US) | Cups |
|---|---|
| 0.25 cups (US) | 0.24 cups |
| 0.5 cups (US) | 0.48 cups |
| 0.75 cups (US) | 0.72 cups |
| 1 cup (US) | 0.96 cups |
| 1.25 cups (US) | 1.2 cups |
| 1.5 cups (US) | 1.44 cups |
| 2 cups (US) | 1.92 cups |
| 2.5 cups (US) | 2.4 cups |
| 3 cups (US) | 2.88 cups |
This is a volume conversion, so the result is the same for every ingredient. Use the cups (US) to cups volume converter to switch between cups, tablespoons, teaspoons, and millilitres without weighing.
Frequently Asked Questions
- What is 1 US cup of caster sugar in cups?
- 1 US cup of caster sugar is 0.96 cups. The ratio is fixed, so 2 US cups of caster sugar is 1.92 cups and 0.5 US cups is 0.48 cups. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the caster sugar converter
- How many cups is 1.5 US cups of caster sugar?
- 1.5 US cups of caster sugar is 1.44 cups. The ratio is fixed, so 1 US cup of caster sugar is 0.96 cups and 2 US cups is 1.92 cups. Type any other amount into the converter above for the exact figure, or use the chart above for the common ones.
- What is 2 US cups of caster sugar in cups?
- 2 US cups of caster sugar is 1.92 cups. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 US cup of caster sugar is 0.96 cups, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact cups reading.
- How many US cups of caster sugar is 0.96 cups?
- 0.96 cups of caster sugar is 1 US cup. The conversion works the same in reverse, so you can switch between cups and US cups without changing the result. This helps when a recipe lists US cups but you would rather weigh or measure in cups. The converter above and the chart above cover both directions for any amount.
- What is 1/2 cup (US) caster sugar in cups?
- 1/2 US cup of caster sugar is 0.48 cups. The ratio is fixed, so 1 US cup of caster sugar is 0.96 cups and 2 US cups is 1.92 cups. Half measures come up often when scaling a recipe down, and the figure divides cleanly. Use the converter above for any other amount, or the chart above for the common ones.
Related to Caster Sugar
Sugar
Granulated sugar swaps 1:1 for caster sugar in most recipes, though its larger crystals dissolve more slowly. For meringues or smooth sponges, pulse granulated sugar in a food processor for a few seconds to bring it closer to caster's finer grain. See our Sugar converter.
Icing Sugar
Icing sugar is milled far finer and packs much lighter than caster (125 g vs 225 g per cup), so it is not a 1:1 swap. Use it only where a powder works, such as uncooked frostings and dusting, not for creaming into a cake batter. See our Icing Sugar converter.
Raw Sugar
Raw sugar has large, coarse crystals that dissolve slowly, the opposite of fine caster sugar. It packs lighter (200 g vs 225 g per cup), so it is not a 1:1 swap by volume; weigh when substituting. See our Raw Sugar converter.
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