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1/3 Cup of Caster Sugar in Grams

1/3 cup of caster sugar = 73 grams

That's 73 g, or 2.59 oz by weight.

1/3 cup of caster sugar in other units

Grams
73
Ounces
2.59
Metric cups (250 ml)
0.32
Tablespoons
5.33
Milliliters
79

Caster Sugar converter

0.33 cups = 73 grams

How to convert cups of caster sugar to grams

One level US cup of caster sugar weighs about 220 g. Multiply: 1/3 × 220 = 73 g.

Sugar is fairly consistent by volume, but sticky syrups cling to the cup – grease it first so you get the full amount out.

Caster Sugar: cups to grams chart

CupsGrams
1/8 cup28 grams
1/4 cup55 grams
1/3 cup73 grams
1/2 cup110 grams
2/3 cup147 grams
3/4 cup165 grams
1 cup220 grams
1 1/4 cups275 grams
1 1/2 cups330 grams
2 cups440 grams
2 1/2 cups550 grams
3 cups660 grams
4 cups880 grams

1/3 cup of other ingredients

The same amount weighs very different things depending on the ingredient:

IngredientGrams
Granulated Sugar67 grams
Brown Sugar73 grams
Powdered Sugar40 grams
Coconut Sugar50 grams
Honey113 grams
Maple Syrup105 grams
Golden Syrup113 grams
Molasses112 grams
All-Purpose Flour42 grams
Bread Flour42 grams
Almond Flour32 grams
Butter76 grams
Milk81 grams
Rolled Oats30 grams

More caster sugar conversions

Frequently asked questions

How many grams is 1/3 cup of caster sugar?

1/3 cup of caster sugar is 73 grams, based on 220 g per level US cup.

Is it different with a UK or Australian cup?

Slightly. UK, Australian and New Zealand recipes use a 250 ml metric cup, which is about 6% bigger than a US cup (236.6 ml). Using a metric cup, 1/3 cup of caster sugar would be 77 g.

Should I weigh caster sugar or measure it by volume?

Sugar is fairly consistent by volume, but sticky syrups cling to the cup – grease it first so you get the full amount out. Weighing is always more accurate, which is why grams are the safest choice for baking.