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Powdered sugar

One US cup of powdered sugar is estimated at 113 grams using our reference. How you fill the cup matters.

Reference ingredient

113 g per US cup

Powdered sugar · Unsifted powdered sugar

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Ingredient

Unsifted powdered sugar

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50 grams of powdered sugar is about

0.44

US cups

Approximate recipe equivalent for Powdered sugar. Ingredient preparation and measuring technique affect the result.

Reference: 113 g per 236.5882 ml US reference cup. More precision: 0.4425 US cups.

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Volume depends on the ingredient and the measuring method. Results crossing weight and volume are recipe estimates.

Powdered sugar conversions at a glance

Reference: 113 grams per US cup, unsifted powdered sugar. Values are approximate.

Grams of powdered sugar to US cups
Powdered sugar weight	US cups	Kitchen measure
30 g	0.27	a little over ¼ cup
50 g	0.44	a little under ½ cup
100 g	0.88	about 0.88 cups
120 g	1.06	a little over 1 cup
150 g	1.33	a little under 1 ⅓ cups
200 g	1.77	a little over 1 ¾ cups
250 g	2.21	a little under 2 ¼ cups

Cups of powdered sugar to grams
Cups	US cup (236.59 ml) → g	Metric cup (250 ml) → g
0.25 cups	28.25	29.85
0.3333 cups	37.67	39.8
0.5 cups	56.5	59.7
0.6667 cups	75.33	79.6
0.75 cups	84.75	89.55
1 cup	113	119.41
2 cups	226	238.81

Spoons of powdered sugar to grams by system
Spoon	US (14.79 / 4.93 ml)	Metric (15 / 5 ml)	Australian (20 / 5 ml)
1 tbsp	7.06	7.16	9.55
1 tsp	2.35	2.39	2.39

Powdered sugar amounts people look up

The measures most often searched for this ingredient, converted with the reference above.

Searched powdered sugar amounts in grams, US cups and ounces (approximate recipe equivalents)
Amount	Grams	US cups	Ounces (weight)
½ US cup	56.5 g	0.5 US cups	1.993 oz
1 US cup	113 g	1 US cups	3.986 oz
2 US cups	226 g	2 US cups	7.9719 oz
3 US cups	339 g	3 US cups	11.9579 oz
4 US cups	452 g	4 US cups	15.9438 oz
50 grams	50 g	0.4425 US cups	1.7637 oz
100 grams	100 g	0.885 US cups	3.5274 oz
150 grams	150 g	1.3274 US cups	5.2911 oz
200 grams	200 g	1.7699 US cups	7.0548 oz
250 grams	250 g	2.2124 US cups	8.8185 oz

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How to measure ingredients

How to convert powdered sugar

Our reference is 113 grams per US reference cup of powdered sugar, unsifted powdered sugar. That works out to about 0.4776 grams per millilitre, so cups = grams ÷ 113 and grams = cups × 113 in US customary measures.

For metric and Australian recipes the cup holds 250 ml, so one cup of powdered sugar is about 119.41 grams. Australian tablespoons hold 20 ml rather than 15 ml, which the calculator handles when you pick that system.

Preparation changes the weight

The reference describes powdered sugar as: unsifted powdered sugar. A different form, such as sifted, packed, melted, chopped or cooked, can hold a different weight in the same cup and needs its own reference. When a recipe gives a gram amount, weigh that amount instead of converting.

Brand, moisture and how firmly the cup is filled all move the practical result. Treat the numbers here as recipe equivalents, not laboratory densities.

Where the number comes from

The reference comes from King Arthur Baking ingredient weight chart, which lists 1 cup as 113 grams. Published recipe weight, normalised to one reference cup. This site assigns the published cup weight to its adopted US reference cup of 236.5882365 ml; the source itself does not define an exact millilitre cup volume. Checked September 25, 2026.

A few useful answers

Kitchen questions, answered.

How many grams are in a cup of powdered sugar?

About 113 grams per US customary cup (unsifted powdered sugar), or about 119.41 grams per 250 ml metric cup, using our reference.

How many cups are 100 grams of powdered sugar?

About 0.88 US cups. Use the calculator for any other amount or cup system.

Can I substitute a similar ingredient?

A measurement conversion does not establish a recipe substitution. Two ingredients can weigh the same per cup and still behave differently in a recipe; follow the recipe author's substitution guidance.

Sources behind the numbers

Sources checked September 25, 2026. Ingredient values are recipe equivalents, not laboratory densities.