sugars
Caster Sugar (Superfine):
Grams to Cups
200 g
per cup
100 g
per ½ cup
50 g
per ¼ cup
By Stefan Ulrich · Last updated
This site's reference is 200 g per cup of dry caster sugar, filled without packing. Caster or superfine sugar has fine crystals; it is not powdered icing sugar.
Convert: Caster Sugar (Superfine)
1 US cup ≈ 200 g
US cups
= — g
g
= — US cups
Quick reference
How much Caster Sugar (Superfine) weighs at each cup measure.
Measurement Table
| Cups | Grams | Ounces |
|---|---|---|
| 1 tsp | 4 g | 0.14 oz |
| 1 tbsp | 13 g | 0.46 oz |
| ⅛ cup | 25 g | 0.88 oz |
| ¼ cup | 50 g | 1.76 oz |
| ⅓ cup | 67 g | 2.36 oz |
| ½ cup | 100 g | 3.53 oz |
| ⅔ cup | 133 g | 4.69 oz |
| ¾ cup | 150 g | 5.29 oz |
| 1 cup | 200 g | 7.05 oz |
| 1¼ cups | 250 g | 8.82 oz |
| 1½ cups | 300 g | 10.58 oz |
| 2 cups | 400 g | 14.11 oz |
| 3 cups | 600 g | 21.16 oz |
About Caster Sugar (Superfine)
Spoon or pour into a dry cup and level the surface. Fine crystals dissolve readily in mixtures such as meringue, but adding sugar gradually and following the mixing method still matters.
If making caster sugar from granulated sugar, process it briefly and let dust settle before opening the processor. Measure after processing when following a volume recipe; do not grind all the way to powder.
Tips for measuring Caster Sugar (Superfine)
- Check that the packet says caster or superfine, not icing sugar.
- Keep the sugar dry so clumps do not affect measuring.
Common mistakes
- Using icing sugar, which may contain starch, as an identical substitute.
Frequently Asked Questions
- How many grams are in a cup of Caster Sugar (Superfine)?
- This converter uses 200 g per US cup as its reference. Check the ingredient form and source notes above; use the recipe author's weight if one is provided.
- What should I check when using Caster Sugar (Superfine)?
- Check that the packet says caster or superfine, not icing sugar. Keep the sugar dry so clumps do not affect measuring.