Convert Caster Sugar from Cup to Ounces
How many ounces is 1 cup of caster sugar?
1 cup of caster sugar (castor sugar) is 7.94 ounces. 2 cups of caster sugar is 15.88 ounces. 1/2 cup of caster sugar is 3.97 ounces. 1/4 cup (0.25 cup) of caster sugar is 1.99 ounces. 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. Use the US cup converter →
- 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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7.94 OuncesCaster 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 to ounces.
| Cups | Ounces |
|---|---|
| 0.25 cups | 1.99 oz |
| 0.5 cups | 3.97 oz |
| 0.75 cups | 5.96 oz |
| 1 cup | 7.94 oz |
| 1.25 cups | 9.93 oz |
| 1.5 cups | 11.91 oz |
| 2 cups | 15.88 oz |
| 2.5 cups | 19.85 oz |
| 3 cups | 23.82 oz |
For the reverse conversion, see 1 ounce of caster sugar in cups.
Frequently Asked Questions
- What is 1 cup of caster sugar in ounces?
- 1 cup of caster sugar is 7.94 ounces. The ratio is fixed, so 2 cups of caster sugar is 15.88 ounces and 0.5 cups is 3.97 ounces. 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 ounces is 1.5 cups of caster sugar?
- 1.5 cups of caster sugar is 11.91 ounces. The ratio is fixed, so 1 cup of caster sugar is 7.94 ounces and 2 cups is 15.88 ounces. Type any other amount into the converter above for the exact figure, or use the chart above for the common ones.
- What is 2 cups of caster sugar in ounces?
- 2 cups of caster sugar is 15.88 ounces. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 cup of caster sugar is 7.94 ounces, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact ounces reading.
- How many cups of caster sugar is 7.94 ounces?
- 7.94 ounces of caster sugar is 1 cup. The conversion works the same in reverse, so you can switch between ounces and cups without changing the result. This helps when a recipe lists cups but you would rather weigh or measure in ounces. The converter above and the chart above cover both directions for any amount.
- How much is 1 cup of castor sugar in ounces?
- Castor sugar is another name for caster sugar, so 1 cup of castor sugar is 7.94 ounces, exactly the same as caster sugar. The figure does not change with the name: 2 cups is 15.88 ounces and 0.5 cups is 3.97 ounces. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
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.
Brown Sugar
Brown sugar is caster sugar's opposite in the creaming bowl: damp, clumping, and pressed into the cup instead of levelled off. Swap it in and the molasses brings moisture with it, so a sponge built for caster comes out denser, darker, and slower to dry out. See what 1 cup of brown sugar is in ounces.
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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