300g caster sugar in cups
300g of caster sugar = 1⅓ cups · 21.3 tbsp · 10.6 oz
One US cup of caster sugar weighs 225 g, so 300 grams works out at 1⅓ 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 300g of caster sugar works out
One US cup of caster sugar weighs 225 grams, so divide the weight by 225: 300 ÷ 225 = 1.333 cups. That is 21.333 level tablespoons if you would rather measure by spoon, or 10.6 oz on a scale set to imperial.
In a 250 ml metric cup, 300g of caster sugar is 1.262 cups rather than 1.333, 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
300g of caster sugar: common questions
How many cups is 300 grams of caster sugar?
300 grams of caster sugar is about 1.333 US cups, since one cup weighs 225 grams.
How do I measure 300 grams of caster sugar without scales?
Use tablespoons: 300 grams is about 21.333 level tablespoons of caster sugar, or 1.333 cups.
How many ounces is 300 grams of caster sugar?
10.6 oz. Weight units do not depend on the ingredient, so 300 grams of anything is 10.6 oz — it is the cup figure that changes.
For every other amount, see the full caster sugar cups to grams tables.