Sugars & Syrups
Caster Sugar conversion chart
1 cup of caster sugar = 225 g = 7.94 oz. Convert any amount below, or use the reference charts for cups, tablespoons, grams and ounces.
1 cup of caster sugar =
225 g
- oz
- 7.94
- kg
- 0.225
- lb
- 0.496
- 1 cup
- 225 g
- 1 tablespoon
- 14.1 g
- 1 teaspoon
- 4.69 g
- 1 cup in ounces
- 7.94 oz
- 100 g in cups
- 0.444 cups
- Density
- 0.95 g/ml
Measuring note
Caster (superfine) sugar has smaller crystals that pack tighter than granulated sugar, so a cup weighs more.
Source: FAO / INFOODS density database
Caster Sugar cups to grams chart
US cups converted to grams, ounces and millilitres. Fractions are written the way recipes write them.
| Cups (US) | Grams | Ounces (weight) | Millilitres |
|---|---|---|---|
| 1/8 cup | 28.1 g | 0.992 oz | 29.6 ml |
| 1/4 cup | 56.3 g | 1.98 oz | 59.1 ml |
| 1/3 cup | 75 g | 2.65 oz | 78.9 ml |
| 1/2 cup | 113 g | 3.97 oz | 118 ml |
| 2/3 cup | 150 g | 5.29 oz | 158 ml |
| 3/4 cup | 169 g | 5.95 oz | 177 ml |
| 1 cup | 225 g | 7.94 oz | 237 ml |
| 1 1/2 cup | 338 g | 11.9 oz | 355 ml |
| 2 cup | 450 g | 15.9 oz | 473 ml |
| 3 cup | 675 g | 23.8 oz | 710 ml |
| 4 cup | 900 g | 31.7 oz | 946 ml |
Tablespoons and teaspoons
1 tbsp ≈ 14.1 g · 1 tsp ≈ 4.69 g
| Tablespoons (US) | Grams | Cups (US) |
|---|---|---|
| 1 tbsp | 14.1 g | 0.063 cup |
| 2 tbsp | 28.1 g | 0.125 cup |
| 3 tbsp | 42.2 g | 0.188 cup |
| 4 tbsp | 56.3 g | 0.25 cup |
| 5 tbsp | 70.3 g | 0.313 cup |
| 6 tbsp | 84.4 g | 0.375 cup |
| 8 tbsp | 113 g | 0.5 cup |
| 10 tbsp | 141 g | 0.625 cup |
| 12 tbsp | 169 g | 0.75 cup |
| 16 tbsp | 225 g | 1 cup |
Grams back to cups
Useful when a metric recipe gives grams but you only own cups.
| Grams | Cups (US) | Tablespoons (US) |
|---|---|---|
| 10 g | 0.044 cup | 0.711 tbsp |
| 25 g | 0.111 cup | 1.78 tbsp |
| 50 g | 0.222 cup | 3.56 tbsp |
| 75 g | 0.333 cup | 5.33 tbsp |
| 100 g | 0.444 cup | 7.11 tbsp |
| 125 g | 0.556 cup | 8.89 tbsp |
| 150 g | 0.667 cup | 10.7 tbsp |
| 200 g | 0.889 cup | 14.2 tbsp |
| 250 g | 1.11 cup | 17.8 tbsp |
| 500 g | 2.22 cup | 35.6 tbsp |
| 1000 g | 4.44 cup | 71.1 tbsp |
Single-conversion pages for caster sugar
Working with caster sugar
Caster Sugar sits in the sugars & syrups group, where a cup lands in the same range as water, but the material still compacts differently depending on how you fill the cup. Caster (superfine) sugar has smaller crystals that pack tighter than granulated sugar, so a cup weighs more.
If you are converting a whole recipe rather than a single line, the Recipe to Metric converter matches every ingredient to its own density in one pass, and the Recipe Scaler resizes the batch first so you only convert once.
Also sold as: superfine sugar. These names refer to the same product and use the same weight per cup.
Frequently asked questions
How many grams are in a cup of caster sugar?
One US cup of caster sugar weighs about 225 grams (7.94 oz). Caster (superfine) sugar has smaller crystals that pack tighter than granulated sugar, so a cup weighs more.
How many grams are in a tablespoon of caster sugar?
One US tablespoon holds about 14.1 g, and one teaspoon about 4.69 g, since a tablespoon is 14.79 ml and a teaspoon 4.93 ml.
How many cups is 100 g of caster sugar?
100 grams of caster sugar is roughly 0.444 US cups. Weighing is more reliable than filling a cup, especially for sugars & syrups.
Where does this figure come from?
The density used here is 0.951 g/ml, based on FAO / INFOODS density database. Treat it as an approximation: real batches vary with brand, moisture and how the cup is filled.