Convert Icing Sugar from Ounces to Cup

How many cups is 1 ounce of icing sugar?

1 ounce of icing sugar (Powdered Sugar) is 0.23 cups. 2 ounces of icing sugar is 0.45 cups. 4 ounces of icing sugar is 0.91 cups. 6 ounces of icing sugar is 1.36 cups. Use the converter below for any amount.

  • These figures use the metric cup (250 ml). A US cup is slightly smaller at 240 ml, so it holds a little less. Use the US cup converter →
  • Cup sizes are not standard worldwide, so the same cup of an ingredient can weigh more or less depending on the country. What is a cup measurement →

Icing sugar is a finely milled white sugar with a light, silky texture. One metric cup weighs approximately 125 grams (4.41 oz), noticeably lighter than granulated sugar because the fine particles don't pack as tightly. It's used in buttercreams, glazes, frostings, and as a dusting over cakes and pastries.

Icing sugar is so fine and airy that the amount you get in a cup can vary significantly depending on how it's scooped — measuring by weight gives far more consistent results. This page lets you convert icing sugar between grams, cups, tablespoons, and more so your recipes turn out reliably every time.

Also known as

  • Powdered Sugar
  • Confectioners' Sugar

Related Icing Sugar Ingredients

Granulated sugar is the coarse, crystalline form that icing sugar is milled from. It is heavier by cup (200 g vs 125 g) and creams into butter for cakes, whereas icing sugar suits frostings and dusting, so the two are not a straight 1:1 swap. See what 1 ounce of sugar is in cups.

Raw sugar has large, coarse crystals with a faint molasses taste, far removed from the fine powder of icing sugar. It packs much heavier (200 g vs 125 g per cup), so the two are not a straight swap. See what 1 ounce of raw sugar is in cups.

Out of icing sugar? See icing sugar substitutes →

No scale? The tool below gives a good estimate, but for exact bakes a digital kitchen scale removes the guesswork.

Weigh it exact, get a scale

Icing Sugar Measurement Converter

Enter a value and pick your units.

Result

0.23 Cup

Icing Sugar Calculators & Baking Tools

Working with icing sugar? These tools handle the jobs a converter cannot.

Common Icing Sugar Conversions

Here are the most common icing sugar conversions from ounces to cups.

OuncesCups
1 oz0.23 cups
2 oz0.45 cups
3 oz0.68 cups
4 oz0.91 cups
5 oz1.13 cups
6 oz1.36 cups
8 oz1.81 cups
10 oz2.27 cups
12 oz2.72 cups

Icing Sugar Conversion Chart

The conversion chart below gives a quick reference for converting icing sugar from Ounces to Cup and other measurements.

ouncescupgramslbkgcup(US)tbsptsp
2.5 oz0.57 cup70.86 g0.16 lb0.07 kg0.59 cup (US)9.45 tbsp28.34 tsp
5 oz1.13 cup141.72 g0.31 lb0.14 kg1.18 cup (US)18.9 tbsp56.69 tsp
7.5 oz1.7 cup212.59 g0.47 lb0.21 kg1.77 cup (US)28.34 tbsp85.03 tsp
10 oz2.27 cup283.45 g0.62 lb0.28 kg2.36 cup (US)37.79 tbsp113.38 tsp

For the reverse conversion, see 1 cup of icing sugar in ounces.

Frequently Asked Questions

How many cups is 1 ounce of icing sugar?
1 ounce of icing sugar is 0.23 cups. The conversion is fixed, so 2 ounces is 0.45 cups and 4 ounces is 0.91 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones. Open the icing sugar converter
How many cups is 2 ounces of icing sugar?
2 ounces of icing sugar is 0.45 cups. The conversion is fixed, so 1 ounce is 0.23 cups and 4 ounces is 0.91 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
What is 4 oz icing sugar in cups?
4 ounces of icing sugar is 0.91 cups. The conversion is fixed, so 1 ounce is 0.23 cups and 2 ounces is 0.45 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
What is 6 oz icing sugar in cups?
6 ounces of icing sugar is 1.36 cups. The conversion is fixed, so 1 ounce is 0.23 cups and 2 ounces is 0.45 cups. These whole-ounce amounts are the ones recipes call for most with bulk ingredients, and the figure scales in a straight line as you multiply or divide. Use the converter above for any other amount, or the conversion chart on this page for the common ones.
How much is 1 ounce of Powdered Sugar in cups?
Powdered Sugar is another name for icing sugar, so 1 ounce of Powdered Sugar is 0.23 cups, exactly the same as icing sugar. The figure does not change with the name: 2 ounces is 0.45 cups and 0.5 ounces is 0.11 cups. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.
Are icing sugar and Powdered Sugar the same thing?
Yes. Powdered Sugar is another name for icing sugar, so they are the same ingredient and convert identically. 1 ounce of icing sugar is 0.23 cups under either name, and 2 ounces is 0.45 cups. Recipes use the two names interchangeably, so you can follow either one without changing quantities or weighing any differently.

Other Ingredients

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