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Caster Sugar: Ounces to Cups

Enter an amount to convert caster sugar from ounces to cups. One ounce of caster sugar is about 0.126 cups.

5 ounces of caster sugar = 0.63 cups

Tip: Superfine sugar.

Caster Sugar Ounces to Cups chart

Common amounts, rounded for the kitchen.

OuncesCups
0.5 ounces0.063 cups
1 ounce0.126 cups
2 ounces0.252 cups
3 ounces0.378 cups
4 ounces0.504 cups
5 ounces0.63 cups
6 ounces0.756 cups
8 ounces1.01 cups
10 ounces1.26 cups
12 ounces1.51 cups
16 ounces2.02 cups

Frequently asked questions

How many cups is 1 ounce of caster sugar?
1 ounce of caster sugar is about 0.126 cups, based on a density of 225 grams per cup.
Why isn't this the same for every ingredient?
Because weight and volume only line up through density. Caster Sugar weighs 225 g per cup, so its conversion differs from flour, sugar, or water.

Other Caster Sugar conversions