Convert Icing Sugar from Cup (US) to Grams

How many grams is 1 US cup of icing sugar?

1 US cup of icing sugar (Powdered Sugar) is 120 grams. 2 US cups of icing sugar is 240 grams. Use the converter below for any amount.

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

Granulated sugar is the coarse, crystalline form that icing sugar is milled from. It is heavier by cup (201 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 our Sugar converter.

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 our Raw Sugar converter.

Out of icing sugar? See icing sugar substitutes →

No measuring cups? The tool below gets you close. For consistent results, grab a measuring cup set.

Icing Sugar Measurement Converter

Enter a value and pick your units.

Result

0 Grams

Common Icing Sugar Conversions

Here are the most common icing sugar conversions from cups (US) to grams.

Cups (US)Grams
0.25 cups (US)30 g
0.5 cups (US)60 g
0.75 cups (US)90 g
1 cup (US)120 g
1.25 cups (US)150 g
1.5 cups (US)180 g
2 cups (US)240 g
2.5 cups (US)300 g
3 cups (US)360 g

Icing Sugar Conversion Chart

The conversion chart below gives a quick reference for converting icing sugar from Cup (US) to Grams and other measurements.

cup(US)gramscupouncestbsptsp
0.25 cup (US)30 g0.24 cup1.06 oz4 tbsp12 tsp
0.5 cup (US)60 g0.48 cup2.12 oz8 tbsp24 tsp
1 cup (US)120 g0.96 cup4.23 oz16 tbsp48 tsp
2 cup (US)240 g1.92 cup8.47 oz32 tbsp96 tsp

Frequently Asked Questions

How many grams is 1 US cup of icing sugar?
1 US cup of icing sugar is 120 grams. The ratio is fixed, so 2 US cups of icing sugar is 240 grams and 0.5 US cups is 60 grams. Use the converter above for any quantity, or check the conversion chart on this page for the most common amounts at a glance. Open the icing sugar converter
How many grams is 1.5 US cups of icing sugar?
1.5 US cups of icing sugar is 180 grams. The ratio is fixed, so 1 US cup of icing sugar is 120 grams and 2 US cups is 240 grams. Type any other amount into the converter above for the exact figure, or use the chart below for the common ones.
How many grams is 2 US cups of icing sugar?
2 US cups of icing sugar is 240 grams. Conversions scale in a straight line, so halving or doubling a recipe keeps the same ratio. 1 US cup of icing sugar is 120 grams, and you can multiply or divide that figure to match whatever your recipe needs. Enter any amount in the converter above for an exact grams reading.
How many US cups of icing sugar is 120 grams?
120 grams of icing sugar is 1 US cup. The conversion works the same in reverse, so you can switch between grams and US cups without changing the result. This helps when a recipe lists US cups but you would rather weigh or measure in grams. The converter above and the chart below cover both directions for any amount.
How many grams is 1 US cup of Powdered Sugar?
Powdered Sugar is another name for icing sugar, so 1 US cup of Powdered Sugar is 120 grams, exactly the same as icing sugar. The figure does not change with the name: 2 US cups is 240 grams and 0.5 US cups is 60 grams. Use the converter above for any quantity, or read the conversion chart on this page for the most common amounts.

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