Convert ounces Powdered Sugar to cups Powdered Sugar
Instantly convert ounces Powdered Sugar (ounces) to cups Powdered Sugar (cups) with our free online calculator.
Quick Reference: Powdered Sugar
| ounces | cups |
|---|---|
| 10 | 2.14 |
| 25 | 5.35 |
| 50 | 10.70 |
| 100 | 21.40 |
| 200 | 42.80 |
| 500 | 106.99 |
How to Convert ounces Powdered Sugar to cups Powdered Sugar
Formula
To convert ounces Powdered Sugar (ounces) to cups Powdered Sugar (cups): Divide ounces by 0.56 (density of Powdered Sugar)
About ounces Powdered Sugar (ounces)
Ounces of Powdered Sugar. Measured by US avoirdupois ounce (= 28.349523125 g exactly per NIST SP 811 — distinct from fluid ounce which is a volume unit). Mass-ounce measurement is preferred in US butcher/bakery/professional contexts where precision matters but the recipe uses imperial customary units. Common US baking ingredient packages list both ounces (mass) + grams: a stick of butter = 4 oz = 113 g; a 'pound' of flour = 16 oz = 454 g. CRITICAL: do NOT confuse with the troy ounce (~31.1 g — used only for precious metals) or the fluid ounce (volume unit = 29.57 mL). Powdered sugar (confectioners' sugar, icing sugar, 10X sugar) is granulated sugar pulverized to a fine powder + blended with 3% cornstarch to prevent caking. The 'X' grading indicates fineness: 4X = coarse, 6X = standard, 10X = fine (US grocery default, Domino + C&H), 14X = ultra-fine for professional pastry. Density ~0.560 g/mL (1 cup unsifted = 120 g per King Arthur Baking standard; 1 cup sifted = ~110 g). Powdered sugar dissolves instantly without graininess, making it essential for: royal icing (1 lb sugar + 2 egg whites + 1 tsp cream of tartar), buttercream frosting, glazes for donuts + sweet rolls, dusting cakes/cookies/Beignets/zeppole, and sweetening whipped cream without crystals. The cornstarch addition means powdered sugar should NOT be used 1:1 to replace granulated sugar in recipes requiring liquid sugar dissolution. Shelf life: indefinite if kept airtight + dry. Density: 0.560 g/mL (used to convert volume measurements to mass).
About cups Powdered Sugar (cups)
Cups of Powdered Sugar. Measured by US cup (= 240 mL = 16 US tablespoons = 48 US teaspoons per FDA 21 CFR 101.9). The cup is the dominant US baking + cooking volume unit, but actual density varies significantly by how the ingredient is packed (scooped vs spooned-and-leveled — a 1-cup scoop of flour can range from 110 g to 150+ g depending on technique, which is why precise bakers use mass measurement in grams). Always level with a flat edge (the back of a knife) for accurate volumetric measurement. Powdered sugar (confectioners' sugar, icing sugar, 10X sugar) is granulated sugar pulverized to a fine powder + blended with 3% cornstarch to prevent caking. The 'X' grading indicates fineness: 4X = coarse, 6X = standard, 10X = fine (US grocery default, Domino + C&H), 14X = ultra-fine for professional pastry. Density ~0.560 g/mL (1 cup unsifted = 120 g per King Arthur Baking standard; 1 cup sifted = ~110 g). Powdered sugar dissolves instantly without graininess, making it essential for: royal icing (1 lb sugar + 2 egg whites + 1 tsp cream of tartar), buttercream frosting, glazes for donuts + sweet rolls, dusting cakes/cookies/Beignets/zeppole, and sweetening whipped cream without crystals. The cornstarch addition means powdered sugar should NOT be used 1:1 to replace granulated sugar in recipes requiring liquid sugar dissolution. Shelf life: indefinite if kept airtight + dry. Density: 0.560 g/mL (used to convert volume measurements to mass).