Convert Caster Sugar from Grams to Cup
How many cups is 100 grams of caster sugar?
100 grams of caster sugar (castor sugar) is 0.44 cups. 200 grams of caster sugar is 0.89 cups. 225 grams of caster sugar is 1 cup. 500 grams of caster sugar is 2.22 cups. Use the converter below for any amount.
- These figures use the metric cup (250 ml), so 1 cup is 225 g. A US cup is slightly smaller at 240 ml and holds about 216 g. 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 scale? The tool below gives a good estimate, but for exact bakes a digital kitchen scale removes the guesswork.
Weigh it exact, get a scaleCaster Sugar Measurement Converter
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1.11 CupCaster Sugar Calculators & Baking Tools
Working with caster sugar? These tools handle the jobs a converter cannot.
- Jam and Marmalade Calculator Check the sugar a batch of preserve needs and how many jars it fills.
- Pan Size Converter Rescale a recipe for a different cake tin size.
- Oven to Air Fryer Converter Match the temperature and time when you swap the oven for an air fryer, fan oven, or slow cooker.
- 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 grams to cups.
| Grams | Cups |
|---|---|
| 50 g | 0.22 cups |
| 100 g | 0.44 cups |
| 125 g | 0.56 cups |
| 150 g | 0.67 cups |
| 175 g | 0.78 cups |
| 200 g | 0.89 cups |
| 225 g | 1 cup |
| 250 g | 1.11 cups |
| 300 g | 1.33 cups |
| 400 g | 1.78 cups |
| 450 g | 2 cups |
| 500 g | 2.22 cups |
For grams to cups with a different ingredient, use the grams to cups converter for a quick-reference table.
For the reverse conversion, see 1 cup of caster sugar in grams.
Frequently Asked Questions
- How many cups is 100 grams of caster sugar?
- 100 grams of caster sugar is 0.44 cups. The conversion is fixed, so 50 grams is 0.22 cups and 200 grams is 0.89 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones. Open the caster sugar converter
- How many cups is 200 grams of caster sugar?
- 200 grams of caster sugar is 0.89 cups. The conversion is fixed, so 100 grams is 0.44 cups and 400 grams is 1.78 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
- What is 225g caster sugar in cups?
- 225 grams of caster sugar is 1 cup. The conversion is fixed, so 112.5 grams is 0.5 cups and 450 grams is 2 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
- What is 500g caster sugar in cups?
- 500 grams of caster sugar is 2.22 cups. The conversion is fixed, so 250 grams is 1.11 cups and 1 kg is 4.44 cups. Halving or doubling a recipe keeps the same ratio. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
- How much is 100 grams of castor sugar in cups?
- Castor sugar is another name for caster sugar, so 100 grams of castor sugar is 0.44 cups, exactly the same as caster sugar. The figure does not change with the name: 200 grams is 0.89 cups and 50 grams is 0.22 cups. 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.
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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