100g caster sugar in cups
100g of caster sugar = 0.444 cups · 7.11 tbsp · 3.53 oz
One US cup of caster sugar weighs 225 g, so 100 grams works out at 0.444 cups. Use the converter for any other weight.
Based on a measured density of 225 g per US cup (236.6 ml), spooned and levelled rather than scooped. Last reviewed .
How 100g of caster sugar works out
One US cup of caster sugar weighs 225 grams, so divide the weight by 225: 100 ÷ 225 = 0.444 cups. That is 7.111 level tablespoons if you would rather measure by spoon, or 3.53 oz on a scale set to imperial.
In a 250 ml metric cup, 100g of caster sugar is 0.421 cups rather than 0.444, because the metric cup holds a little more than the US one.
Tip: Caster sugar dissolves faster than granulated, so it's worth the swap for meringues and cold drinks where gritty undissolved sugar would show.
Other caster sugar amounts
100g of caster sugar: common questions
How many cups is 100 grams of caster sugar?
100 grams of caster sugar is about 0.444 US cups, since one cup weighs 225 grams.
How do I measure 100 grams of caster sugar without scales?
Use tablespoons: 100 grams is about 7.111 level tablespoons of caster sugar, or 0.444 cups.
How many ounces is 100 grams of caster sugar?
3.53 oz. Weight units do not depend on the ingredient, so 100 grams of anything is 3.53 oz — it is the cup figure that changes.
For every other amount, see the full caster sugar cups to grams tables.