Icing Sugar in Grams: How Many Grams in a Cup?
1 cup of icing sugar (powdered sugar) weighs 120 grams. Icing sugar compresses easily and can clump — sift it before measuring for the most accurate cup, or weigh it directly for consistent results.
For the most accurate results, weigh your icing sugar with a digital kitchen scale — the values below assume a level, unpacked cup.
Icing sugar cups to grams
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| 1/4 cup | 30g | 1.1 oz | 4 tbsp |
| 1/3 cup | 40g | 1.4 oz | 5.3 tbsp |
| 1/2 cup | 60g | 2.1 oz | 8 tbsp |
| 2/3 cup | 80g | 2.8 oz | 10.7 tbsp |
| 3/4 cup | 90g | 3.2 oz | 12 tbsp |
| 1 cup | 120g | 4.2 oz | 16 tbsp |
| 1 1/2 cups | 180g | 6.3 oz | 24 tbsp |
| 2 cups | 240g | 8.5 oz | 32 tbsp |
Icing sugar ounces to grams
| Ounces | Grams | Cups |
|---|---|---|
| 1 oz | 28g | 0.24 cups |
| 2 oz | 57g | 0.47 cups |
| 3 oz | 85g | 0.71 cups |
| 4 oz | 113g | 0.94 cups |
| 6 oz | 170g | 1.42 cups |
| 8 oz | 227g | 1.89 cups |
| 10 oz | 283g | 2.36 cups |
| 12 oz | 340g | 2.83 cups |
| 16 oz | 454g | 3.78 cups |
Frequently asked questions
How many grams is 1 cup of icing sugar?
1 cup of icing sugar weighs 120g.
How many grams is 1/2 cup of icing sugar?
1/2 cup of icing sugar weighs 60g.
How many grams is 1/4 cup of icing sugar?
1/4 cup of icing sugar weighs 30g.
How many cups is 100g of icing sugar?
100g of icing sugar is approximately 0.83 cups.
How many grams is 2 cups of icing sugar?
2 cups of icing sugar weighs 240g.
How many grams is 1/3 cup of icing sugar?
1/3 cup of icing sugar weighs 39.6g.
How many ounces is 1 cup of icing sugar?
1 cup of icing sugar weighs approximately 4.2 ounces (120g).
How many grams is 3 cups of icing sugar?
3 cups of icing sugar weighs 360g.
Who is this useful for?
If you're an international cook following US-based recipes, you'll often encounter cup measurements for icing sugar. However, many countries — including those in Europe and Asia — primarily use grams for precision. Converting icing sugar to grams ensures consistent and reliable results, whether you're baking or cooking.
Why accuracy matters for icing sugar
Precision is especially important when using icing sugar in baking and cooking. Even small variations in weight can impact the texture, consistency, and flavour of your dish. For example, too much icing 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 icing sugar
- Using icing sugar instead of granulated sugar in recipes that require structure.
- Not sifting icing sugar before mixing, leading to lumps in frosting.
- Using icing sugar in place of caster sugar in delicate cakes.