Powdered Sugar Grams to Cups

One US cup of powdered sugar weighs 120 grams, a tablespoon 7.5 g and a teaspoon 2.5 g, so 100 g is ¾ cup + 1½ tbsp.

1 cup: 120 g
1 tbsp: 7.5 g
1 tsp: 2.5 g

100 g of powdered sugar is

¾ cup + 1½ tbsp

0.83 US cups · 13.3 tbsp · 197 ml · 120 g per cup

Amount in grams

To measure it · spoon and level

½ + ¼ cup+1½ tbsp

One cup of powdered (confectioners') sugar weighs just 120 grams — barely more than half what granulated sugar weighs per cup, because it is mostly air between microscopic particles.

Powdered sugar compacts in the bag, so recipes assume unsifted, lightly spooned cups. If a recipe says "1 cup sifted powdered sugar," sift first, then measure — a sifted cup weighs about 100 grams, a sixth less (USDA). Frosting recipes are forgiving; glazes and macarons are not, so weigh when it matters.

Powdered Sugar grams to cups at a glance

Grams to cups
Grams	Cups
100 g	¾ cup + 1½ tbsp
150 g	1¼ cups
200 g	1⅔ cups
250 g	2 cups + 1½ tbsp
300 g	2½ cups
500 g	4¼ cups

Cups to grams
Cups	Grams
¼ cup	30 g
⅓ cup	40 g
½ cup	60 g
⅔ cup	80 g
¾ cup	90 g
1 cup	120 g
1½ cups	180 g
2 cups	240 g
3 cups	360 g
4 cups	480 g

Powdered Sugar conversion chart

Common gram amounts of powdered sugar converted to cups and tablespoons:

Powdered Sugar: grams to cups and tablespoons
Grams	Cups	Tablespoons
5 g	2 tsp	0.7 tbsp
10 g	4 tsp	1.3 tbsp
15 g	2 tbsp	2 tbsp
20 g	2 tbsp + 2 tsp	2.7 tbsp
25 g	about 3½ tbsp	3.3 tbsp
28 g	3 tbsp + 2¼ tsp	3.7 tbsp
30 g	¼ cup	4 tbsp
32 g	¼ cup + 1 tsp	4.3 tbsp
35 g	¼ cup + 2 tsp	4.7 tbsp
40 g	⅓ cup	5.3 tbsp
45 g	6 tbsp	6 tbsp
50 g	about ⅓ cup + 1½ tbsp	6.7 tbsp
55 g	⅓ cup + 2 tbsp	7.3 tbsp
56 g	⅓ cup + 2 tbsp	7.5 tbsp
60 g	½ cup	8 tbsp
65 g	½ cup + 2 tsp	8.7 tbsp
70 g	½ cup + 1½ tbsp	9.3 tbsp
75 g	½ cup + 2 tbsp	10 tbsp
80 g	⅔ cup	10.7 tbsp
85 g	⅔ cup + 2 tsp	11.3 tbsp
90 g	¾ cup	12 tbsp
100 g	¾ cup + 1½ tbsp	13.3 tbsp
110 g	¾ cup + 2½ tbsp	14.7 tbsp
112 g	¾ cup + 3 tbsp	14.9 tbsp
113 g	¾ cup + 3 tbsp	15.1 tbsp
115 g	about 1 cup	15.3 tbsp
120 g	1 cup	16 tbsp
125 g	about 1 cup	16.7 tbsp
130 g	1 cup + 1½ tbsp	17.3 tbsp
140 g	1 cup + 2½ tbsp	18.7 tbsp
150 g	1¼ cups	20 tbsp
160 g	1⅓ cups	21.3 tbsp
165 g	1¼ cups + 2 tbsp	22 tbsp
170 g	1⅓ cups + 1½ tbsp	22.7 tbsp
175 g	about 1½ cups	23.3 tbsp
180 g	1½ cups	24 tbsp
185 g	about 1½ cups	24.7 tbsp
190 g	1½ cups + 1½ tbsp	25.3 tbsp
200 g	1⅔ cups	26.7 tbsp
220 g	1¾ cups + 1½ tbsp	29.3 tbsp
225 g	1¾ cups + 2 tbsp	30 tbsp
226 g	1¾ cups + 2 tbsp	30.1 tbsp
227 g	1¾ cups + 2½ tbsp	30.3 tbsp
230 g	1¾ cups + 2½ tbsp	30.7 tbsp
238 g	2 cups	31.7 tbsp
240 g	2 cups	32 tbsp
250 g	2 cups + 1½ tbsp	33.3 tbsp
255 g	2 cups + 2 tbsp	34 tbsp
260 g	2 cups + 2½ tbsp	34.7 tbsp
270 g	2¼ cups	36 tbsp
275 g	2⅓ cups	36.7 tbsp
280 g	2⅓ cups	37.3 tbsp
300 g	2½ cups	40 tbsp
320 g	2⅔ cups	42.7 tbsp
340 g	2¾ cups + 1½ tbsp	45.3 tbsp
350 g	2¾ cups + 2½ tbsp	46.7 tbsp
360 g	3 cups	48 tbsp
375 g	3 cups + 2 tbsp	50 tbsp
390 g	3¼ cups	52 tbsp
400 g	3⅓ cups	53.3 tbsp
410 g	about 3⅓ cups	54.7 tbsp
420 g	3½ cups	56 tbsp
425 g	3½ cups	56.7 tbsp
450 g	3¾ cups	60 tbsp
454 g	3¾ cups	60.5 tbsp
480 g	4 cups	64 tbsp
500 g	4¼ cups	66.7 tbsp
550 g	4½ cups	73.3 tbsp
560 g	4⅔ cups	74.7 tbsp
600 g	5 cups	80 tbsp
650 g	5⅓ cups	86.7 tbsp
700 g	5¾ cups	93.3 tbsp
750 g	6¼ cups	100 tbsp
800 g	6⅔ cups	106.7 tbsp
900 g	7½ cups	120 tbsp
1000 g	8⅓ cups	133.3 tbsp

Dedicated powdered sugar amount guides link directly; other rows link to the all-ingredient amount chart.

The same amounts for every ingredient

100 grams to cups 150 grams to cups 200 grams to cups 250 grams to cups 300 grams to cups 500 grams to cups

How packing changes a cup of powdered sugar

A cup of powdered sugar weighs about 120g when filled the way this chart assumes. Pressed down it can reach 156g, and dropped in loosely it can fall to 102g. Crystal size decides how much this matters: coarse sugars trap air and vary most, while fine sugars settle consistently.

Results use a US customary cup (236.588ml). Spoon and level dry ingredients unless the ingredient name or recipe specifies packed, sifted, melted, chopped, or another condition. Brand, humidity, packing, and measuring technique can change a volume-based result. Reviewed August 15, 2026 against USDA FoodData Central and King Arthur Baking Ingredient Weight Chart. See how conversions are calculated.

Sugars & Sweeteners compared by cup weight

Swapping one type for another changes the weight of a cup, so a recipe written in cups is not portable between them:

Sugars & Sweeteners: grams per cup, compared with powdered sugar
Type	1 cup	vs powdered sugar
Powdered Sugar	120 g	—
Granulated Sugar	200 g	+80g
Brown Sugar (Packed)	220 g	+100g
Brown Sugar (Unpacked)	145 g	+25g
Powdered Sugar (Sifted)	100 g	-20g
Honey	340 g	+220g
Golden Syrup	340 g	+220g
Maple Syrup	322 g	+202g
Molasses	328 g	+208g
Corn Syrup	340 g	+220g
Agave Nectar	336 g	+216g
Coconut Sugar	154 g	+34g

See powdered sugar among 414 ingredients in the ingredient database.

Any amount of powdered sugar, either way

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Questions

How many cups is 100g of powdered sugar?

100 grams of powdered sugar is about 0.83 cups — roughly ¾ cup plus 1½ tablespoons.

Is icing sugar the same as powdered sugar?

Yes — powdered sugar, confectioners' sugar, and icing sugar are the same product: finely ground sugar with a little cornstarch to prevent caking.

Does "1 cup sifted" mean sift before or after measuring?

Word order matters: "1 cup sifted powdered sugar" = sift, then measure. "1 cup powdered sugar, sifted" = measure, then sift. The first gives you about a sixth less sugar: 100 grams a cup instead of 120.

Can I substitute powdered sugar for granulated by cups?

No — cup for cup, powdered sugar has barely 60% of the sugar content by weight (120g vs 200g), plus added cornstarch. Substitute by weight only, and expect texture differences.

Most-used kitchen conversions

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