Culinary Chemistry & Density Insight
Powdered Sugar (Confectioners) • 120 g/cupIts microscopic particle size dissolves instantly without heat, creating silky smooth buttercreams, glossy royal icings, and melt-in-your-mouth shortbread.
Standard Density: 1 cup = 120g
Powdered Sugar Cups to Grams Guide
Finely pulverized sucrose blended with anti-caking cornstarch: 1 level US cup of powdered sugar weighs exactly 120 grams.
Cups to Grams Baking Converter by Ingredient
Accurate US cups to grams weight chart and density-calibrated culinary conversion for 56+ baking ingredients.
Quick AmountsKitchen Presets
Scale:
Converted Weight Output
120grams
Baking IngredientPowdered Sugar
Conversion Density120 g per Cup
Always fluff and level dry powders like flour before measuring by cup.
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Recipe Multiplier and Scaler in Grams
Scale baking cup requirements instantly for different batch sizes.
All-Purpose Flour
2 cups(240 g)
Granulated Sugar
1 cup(200 g)
Unsalted Butter
0.5 cups(113.5 g)
Cocoa Powder
0.25 cups(25 g)
cup
Kitchen Best Practice
The Proper Way to Measure This Ingredient
Sift if clumpy, spoon gently into the measuring cup, and sweep flat with a knife. Never pack or tap the cup on the counter.
Costly Recipe Defect
Warning: The Common Scooping Mistake
Scooping directly from the bag packs these ultra-fine particles up to 140g - 150g per cup (+20% excess). In buttercream frosting, 30g of extra sugar turns a velvety spread into a chalky, gritty, stiff paste that tears delicate cake layers.
Powdered Sugar (Confectioners)
Full Conversion Reference Card
Accurate weights for cups, tablespoons, teaspoons, ounces, and milliliters based on official baking density factors.
Cups to Grams & Ounces1 cup = 120g
| Cup Amount | Grams (g) | Ounces (oz) | Volume (ml) |
|---|---|---|---|
| 1/8 cup | 15 g | 0.5 oz | 30 ml |
| 1/4 cup | 30 g | 1.1 oz | 60 ml |
| 1/3 cup | 40 g | 1.4 oz | 80 ml |
| 1/2 cup | 60 g | 2.1 oz | 120 ml |
| 2/3 cup | 80 g | 2.8 oz | 160 ml |
| 3/4 cup | 90 g | 3.2 oz | 180 ml |
| 1 cup | 120 g | 4.2 oz | 240 ml |
| 1 1/2 cups | 180 g | 6.3 oz | 360 ml |
| 2 cups | 240 g | 8.5 oz | 480 ml |
| 3 cups | 360 g | 12.7 oz | 720 ml |
| 4 cups | 480 g | 16.9 oz | 960 ml |
Spoons to Grams & Milliliters
| Spoon Measure | Grams (g) | Volume (ml) |
|---|---|---|
| 1 tsp | 2.5 g | 5 ml |
| 1 tbsp | 7.5 g | 15 ml |
| 2 tbsp | 15 g | 30 ml |
| 4 tbsp (1/4 cup) | 30 g | 60 ml |
💡 Baker's Pro Tip:Net weight in grams. 1 US cup = 240 ml = 16 tablespoons = 48 teaspoons.
Tested Baking Substitutions (Exact Gram Ratios)
When replacing this ingredient, volumetric cup swaps fail. Use these kitchen-tested gram ratios to maintain correct moisture and rise.
Option 1
Blended Granulated Sugar + Cornstarch
Blend 115g granulated sugar with 5g (1/2 tbsp) cornstarch in a high-speed blender on high for 60 seconds.
Creates fine homemade powdered sugar suitable for frostings, dustings, and glaze work.
Option 2
Superfine Sugar (Cooked Meringues Only)
Use 120g superfine sugar for 120g powdered sugar in Swiss or Italian meringues.
Dissolves cleanly under heat; do not use in raw buttercreams as it will feel gritty.
Best Used For: Pastries Requiring Exact Precision
These delicate recipes are chemically sensitive to small weight discrepancies.
American Buttercream
Royal Icing for Cookies
Glace Icings
Dusting Fruit Tarts
Whipped Cream Stabilizer
Ingredient Chemistry & Weight FAQs
Powdered Sugar (Confectioners)It contains ~3% food-grade cornstarch to absorb ambient moisture and prevent the microscopic sugar particles from fusing into solid blocks.
If the recipe calls for "1 cup sifted powdered sugar", sift first then measure (~115g). If it says "1 cup powdered sugar, sifted", weigh 120g first and sift after.
Not for creaming. Its fine powder lacks the sharp crystal edges needed to tear air pockets into butter, resulting in a dense, rubbery cake.
Culinary Accuracy
Popular Baking Ingredient Guides
Explore density-accurate weight conversion guides and culinary measuring techniques for the top 12 baking ingredients.
1 cup = 120g
All-Purpose Flour
Standard US cups measure volume, but baking success depends on weight. 1 properly aerated cup of all-purpose flour weighs exactly 120 grams.
View Guide
1 cup = 96g
Almond Flour
Milled blanched almonds are high in natural oils and air. 1 level US cup of super-fine almond flour weighs exactly 96 grams.
View Guide
1 cup = 127g
Bread Flour
Milled from high-protein hard spring wheat: 1 properly spooned and leveled US cup of bread flour weighs exactly 127 grams.
View Guide
1 cup = 200g
Granulated Sugar
Pure white sucrose crystals have a uniform geometric density: 1 level US cup of granulated sugar weighs exactly 200 grams.
View Guide
1 cup = 220g
Packed Brown Sugar
Because sticky molasses coats every sugar crystal, brown sugar must be firmly packed. 1 level packed US cup weighs exactly 220 grams.
View Guide
1 cup = 227g
Butter (Unsalted)
In American baking, 1 standard cup of butter equals exactly 2 sticks, 8 ounces, or 227 grams.
View Guide
1 cup = 100g
Cocoa Powder (Unsweetened)
Light, electrostatic, and intensely absorbent: 1 properly aerated and leveled US cup of unsweetened cocoa powder weighs exactly 100 grams.
View Guide
1 cup = 340g
Honey
Because of its supersaturated sugar concentration, honey is remarkably dense: 1 level US cup weighs an impressive 340 grams.
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1 cup = 90g
Rolled Oats (Old-Fashioned)
Steamed, flattened whole oat groats contain lots of air between flakes: 1 level US cup of rolled oats weighs exactly 90 grams.
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1 cup = 170g
Chocolate Chips (Semi-Sweet)
Standard semi-sweet teardrop morsels nestle together in volume: 1 level US cup of chocolate chips weighs exactly 170 grams.
View Guide
1 cup = 240g
Heavy Cream (36-40% Milkfat)
High-fat dairy liquid has a specific gravity close to water: 1 level US cup of heavy whipping cream weighs approximately 240 grams.
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