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Powdered sugar — Cups to Grams

One US cup of powdered sugar weighs about 113 grams. That makes it lighter than all-purpose flour, which is 120 grams per cup. Powdered sugar is light and clumps easily, so sift it before measuring for accuracy. Use the converter below to switch powdered sugar between cups, grams, ounces, tablespoons and millilitres — or read the full chart underneath.

Also known as icing sugar or confectioners' sugar.

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Powdered sugar conversion chart

Powdered sugar — cups to grams chart
Cups	Grams	Ounces	Tablespoons	Millilitres
⅛ cup	14.13 g	0.498 oz	2	29.57 ml
¼ cup	28.25 g	0.996 oz	4	59.15 ml
⅓ cup	37.67 g	1.33 oz	5.33	78.86 ml
½ cup	56.5 g	1.99 oz	8	118.3 ml
⅔ cup	75.33 g	2.66 oz	10.67	157.7 ml
¾ cup	84.75 g	2.99 oz	12	177.4 ml
1 cup	113 g	3.99 oz	16	236.6 ml
1¼ cups	141.3 g	4.98 oz	20	295.7 ml
1½ cups	169.5 g	5.98 oz	24	354.9 ml
2 cups	226 g	7.97 oz	32	473.2 ml
3 cups	339 g	11.96 oz	48	709.8 ml

Grams to cups: powdered sugar

Powdered sugar — grams to cups chart
Grams	Cups	Ounces	Tablespoons
10 g	0.088	0.353 oz	1.42
25 g	0.221	0.882 oz	3.54
50 g	0.442	1.76 oz	7.08
75 g	0.664	2.65 oz	10.62
100 g	0.885	3.53 oz	14.16
125 g	1.11	4.41 oz	17.7
150 g	1.33	5.29 oz	21.24
200 g	1.77	7.05 oz	28.32
250 g	2.21	8.82 oz	35.4
300 g	2.65	10.58 oz	42.48
400 g	3.54	14.11 oz	56.64
500 g	4.42	17.64 oz	70.8

Powdered confectioners sugar cups to grams conversion chart with tablespoon equivalents — Powdered sugar — cup measures in grams and tablespoons. Save to Pinterest

How to measure powdered sugar

Powdered sugar is light and clumps easily, so sift it before measuring for accuracy.

Because a cup measures volume rather than weight, the most reliable way to measure powdered sugar is with a digital kitchen scale. If you are working from cups, keep your technique consistent every time so your results are repeatable. For more, see our guide on baking by weight versus volume.

No scale yet? You don't need a fancy one; any digital kitchen scale that reads in 1-gram steps does everything on this site. Well-rated kitchen scales on Amazon →

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Substitutes for powdered sugar

1 cup powdered sugar = 1 cup granulated sugar + 1 tbsp cornstarch, blended on high for 1–2 minutes
Won't be as fine as commercial powdered sugar but works for icings, dustings, and frostings. Sift before using to break up any clumps.

See all powdered sugar substitutes, ratios and sources →

Powdered sugar conversions: FAQ

Why doesn't a cup of powdered sugar weigh the same as a cup of water?

A cup measures volume, not weight. Powdered sugar is less dense than water (113 g versus 237 g per cup), so the same volume has a different weight. Weighing in grams is the most accurate way to measure it.

Common powdered sugar conversions

Quick-answer pages for the conversions people search for most.

100 g to cups

100 g powdered sugar ≈ 0.885 cups

200 g to cups

200 g powdered sugar ≈ 1.77 cups

250 g to cups

250 g powdered sugar ≈ 2.21 cups

500 g to cups

500 g powdered sugar ≈ 4.42 cups

¼ cup to grams

¼ cup powdered sugar ≈ 28.25 g

½ cup to grams

½ cup powdered sugar ≈ 56.5 g

1 cup to grams

1 cup powdered sugar ≈ 113 g

2 cups to grams

2 cups powdered sugar ≈ 226 g

Related converters

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* Conversion figures are typical average weights for one US customary cup (236.6 ml), based on the King Arthur Baking Ingredient Weight Chart and cross-referenced with the U.S. Department of Agriculture FoodData Central database. Actual weight varies with packing, brand and humidity — see our methodology.