Kitchen converter / caster sugar
Caster sugar: cups to grams
One US cup of caster sugar weighs about 200 grams. Convert any amount below.
1 cup of caster sugar=200 g
Weights are approximate — see the note on scooping below.
Caster sugar conversion table
| Measure | Grams | Ounces |
|---|---|---|
| 1 cup | 200 g | 7.1 oz |
| ¾ cup | 150 g | 5.3 oz |
| ⅔ cup | 135 g | 4.7 oz |
| ½ cup | 100 g | 3.5 oz |
| ⅓ cup | 67 g | 2.4 oz |
| ¼ cup | 50 g | 1.8 oz |
| 1 tbsp | 13 g | 0.44 oz |
| 1 tsp | 4.2 g | 0.15 oz |
Whose cup?
A cup is not one size. The United States measures 240 ml, the UK, Canada and New Zealand use a 250 ml metric cup, and Japan's カップ is 200 ml — so the same recipe line can mean a fifth more or less flour depending on where it was written. Australia shares the 250 ml cup but uses a 20 ml tablespoon, the only one of its size.
This page is currently showing US cups. Switch standards in the converter above and every number on the page follows.
Why weighing beats scooping
These figures describe caster sugar measured the usual way, but a cup is a container, not a quantity. Flour packed tightly into the cup can outweigh the same cup loosely spooned by a fifth — which is the single most common reason a baked recipe comes out differently than it did last time. If you own a scale, the gram column is the one to trust.
Why a cup of flour isn't a cup of flour →
Caster sugar in other languages
Useful when you are cooking from a recipe written somewhere else — these are the names the same ingredient goes by in the languages Gather supports.
- English caster sugar
- German Feinzucker
- Spanish azúcar extrafino
- French sucre en poudre
- French (Quebec) sucre en poudre
- Italian zucchero semolato fine
- Japanese キャスターシュガー
- Portuguese (Brazil) açúcar refinado
- Portuguese (Portugal) açúcar refinado
What ingredients are called elsewhere →
Out of caster sugar?
Weighing it and replacing it are different questions, and we answer both. What to use instead of caster sugar →