Caster Sugar in Grams: How Many Grams in a Cup?
1 cup of caster sugar weighs 200 grams. Caster sugar is finer than granulated white sugar, which means it packs slightly more tightly per cup. If substituting, weigh rather than swapping cup for cup.
For the most accurate results, weigh your caster sugar with a digital kitchen scale — the values below assume a level, unpacked cup.
Caster sugar cups to grams
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/4 cup | 50g | 1.8 oz | 4 tbsp |
| 1/3 cup | 67g | 2.4 oz | 5.3 tbsp |
| 1/2 cup | 100g | 3.5 oz | 8 tbsp |
| 2/3 cup | 133g | 4.7 oz | 10.7 tbsp |
| 3/4 cup | 150g | 5.3 oz | 12 tbsp |
| 1 cup | 200g | 7.1 oz | 16 tbsp |
| 1 1/2 cups | 300g | 10.6 oz | 24 tbsp |
| 2 cups | 400g | 14.1 oz | 32 tbsp |
Caster sugar ounces to grams
| Ounces | Grams | Cups |
|---|---|---|
| 1 oz | 28g | 0.14 cups |
| 2 oz | 57g | 0.28 cups |
| 3 oz | 85g | 0.43 cups |
| 4 oz | 113g | 0.57 cups |
| 6 oz | 170g | 0.85 cups |
| 8 oz | 227g | 1.13 cups |
| 10 oz | 283g | 1.42 cups |
| 12 oz | 340g | 1.7 cups |
| 16 oz | 454g | 2.27 cups |
Frequently asked questions
How many grams is 1 cup of caster sugar?
1 cup of caster sugar weighs 200g.
How many grams is 1/2 cup of caster sugar?
1/2 cup of caster sugar weighs 100g.
How many grams is 1/4 cup of caster sugar?
1/4 cup of caster sugar weighs 50g.
How many cups is 100g of caster sugar?
100g of caster sugar is approximately 0.5 cups.
How many grams is 2 cups of caster sugar?
2 cups of caster sugar weighs 400g.
How many grams is 1/3 cup of caster sugar?
1/3 cup of caster sugar weighs 67g.
How many ounces is 1 cup of caster sugar?
1 cup of caster sugar weighs approximately 7.1 ounces (200g).
How many grams is 3 cups of caster sugar?
3 cups of caster sugar weighs 600g.
Who is this useful for?
If you're an international cook following US-based recipes, you'll often encounter cup measurements for caster sugar. However, many countries — including those in Europe and Asia — primarily use grams for precision. Converting caster sugar to grams ensures consistent and reliable results, whether you're baking or cooking.
Why accuracy matters for caster sugar
Precision is especially important when using caster sugar in baking and cooking. Even small variations in weight can impact the texture, consistency, and flavour of your dish. For example, too much caster sugar in a recipe can make baked goods dense, while too little may cause them to be too dry or crumbly.
Common mistakes to avoid when cooking with caster sugar
- Using granulated sugar instead of caster sugar in delicate cakes, resulting in grainy texture.
- Not dissolving caster sugar properly in cold liquids.
- Mistaking icing sugar for caster sugar, which can affect baking results.