Powdered Sugar Grams to Cups
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 — sifted cups weigh about 10% less. Frosting recipes are forgiving; glazes and macarons are not, so weigh when it matters.
1 Cup of Powdered Sugar in Grams
One cup of powdered sugar weighs 120 grams. Here are the common cup fractions by weight:
Grams to Cups Converter
Quick select
Reading
Enter an amount in grams to see the conversion for powdered sugar.
US customary cup (236.588ml) · 120g per cup
Dedicated conversion guides use the default US customary cup.
Applies to this page only — the database value (120g per US cup) is unchanged.
Powdered Sugar Density at a Glance
See powdered sugar among 400 ingredients in the ingredient database.
Powdered Sugar Conversion Chart
Common gram amounts of powdered sugar converted to cups and tablespoons:
| Grams | Cups | Tablespoons |
|---|---|---|
| 10g | ⅛ cup | 1 tbsp |
| 15g | ⅛ cup | 2 tbsp |
| 20g | ⅛ cup | 3 tbsp |
| 25g | ¼ cup | 3 tbsp |
| 28g | ¼ cup | 4 tbsp |
| 30g | ¼ cup | 4 tbsp |
| 35g | ⅓ cup | 5 tbsp |
| 40g | ⅓ cup | 5 tbsp |
| 45g | ⅜ cup | 6 tbsp |
| 50g | ⅜ cup | 7 tbsp |
| 56g | ½ cup | 7 tbsp |
| 60g | ½ cup | 8 tbsp |
| 65g | ½ cup | 9 tbsp |
| 70g | ⅝ cup | 9 tbsp |
| 75g | ⅝ cup | 10 tbsp |
| 80g | ⅔ cup | 11 tbsp |
| 85g | ¾ cup | 11 tbsp |
| 90g | ¾ cup | 12 tbsp |
| 100g | ⅞ cup | 13 tbsp |
| 110g | ⅞ cup | 15 tbsp |
| 113g | 1 cup | 15 tbsp |
| 115g | 1 cup | 15 tbsp |
| 120g | 1 cup | 16 tbsp |
| 125g | 1 cup | 17 tbsp |
| 130g | 1⅛ cups | 17 tbsp |
| 140g | 1⅛ cups | 19 tbsp |
| 150g | 1¼ cups | 20 tbsp |
| 160g | 1⅓ cups | 21 tbsp |
| 165g | 1⅜ cups | 22 tbsp |
| 170g | 1⅜ cups | 23 tbsp |
| 175g | 1½ cups | 23 tbsp |
| 180g | 1½ cups | 24 tbsp |
| 185g | 1½ cups | 25 tbsp |
| 190g | 1⅝ cups | 25 tbsp |
| 200g | 1⅔ cups | 27 tbsp |
| 220g | 1⅞ cups | 29 tbsp |
| 225g | 1⅞ cups | 30 tbsp |
| 227g | 1⅞ cups | 30 tbsp |
| 230g | 1⅞ cups | 31 tbsp |
| 240g | 2 cups | 32 tbsp |
| 250g | 2⅛ cups | 33 tbsp |
| 255g | 2⅛ cups | 34 tbsp |
| 260g | 2⅛ cups | 35 tbsp |
| 275g | 2⅓ cups | 37 tbsp |
| 280g | 2⅓ cups | 37 tbsp |
| 300g | 2½ cups | 40 tbsp |
| 320g | 2⅔ cups | 43 tbsp |
| 340g | 2⅞ cups | 45 tbsp |
| 350g | 2⅞ cups | 47 tbsp |
| 360g | 3 cups | 48 tbsp |
| 375g | 3⅛ cups | 50 tbsp |
| 390g | 3¼ cups | 52 tbsp |
| 400g | 3⅓ cups | 53 tbsp |
| 410g | 3⅜ cups | 55 tbsp |
| 420g | 3½ cups | 56 tbsp |
| 450g | 3¾ cups | 60 tbsp |
| 454g | 3¾ cups | 61 tbsp |
| 480g | 4 cups | 64 tbsp |
| 500g | 4⅛ cups | 67 tbsp |
| 550g | 4⅝ cups | 73 tbsp |
| 560g | 4⅔ cups | 75 tbsp |
| 600g | 5 cups | 80 tbsp |
| 650g | 5⅜ cups | 87 tbsp |
| 700g | 5⅞ cups | 93 tbsp |
| 750g | 6¼ cups | 100 tbsp |
| 800g | 6⅔ cups | 107 tbsp |
| 900g | 7½ cups | 120 tbsp |
| 1000g | 8⅓ cups | 133 tbsp |
Dedicated powdered sugar amount guides link directly; other rows link to the all-ingredient amount chart.
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:
| Type | 1 cup | vs powdered sugar |
|---|---|---|
| Powdered Sugar | 120g | — |
| Granulated Sugar | 200g | +80g |
| Brown Sugar (Packed) | 220g | +100g |
| Honey | 340g | +220g |
| Maple Syrup | 322g | +202g |
| Molasses | 328g | +208g |
| Corn Syrup | 340g | +220g |
| Agave Nectar | 336g | +216g |
| Coconut Sugar | 180g | +60g |
| Turbinado Sugar | 200g | +80g |
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.
Other Popular Ingredients
Frequently Asked 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 10% less sugar.
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.