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Per 100g
Nutrition data source: USDA FoodData Central
Common measurement equivalents in grams
Confectioners' sugar is primarily a source of empty calories and simple carbohydrates, providing quick energy but lacking essential vitamins or minerals. While it enhances the texture and taste of foods, it should be consumed in moderation as part of a balanced diet to avoid excessive sugar intake.
Per 100g, confectioners' sugar contains approximately 389 calories and 100g of carbohydrates. It contains zero grams of protein and fat, making it a pure carbohydrate sweetener.
Most confectioners' sugar is vegan, but some brands use bone char to bleach the sugar white. To ensure it is vegan, look for products labeled 'certified vegan' or those made from beets or organic cane sugar, which typically do not use bone char.
Yes, confectioners' sugar is naturally gluten-free. It usually contains a small amount of cornstarch or tapioca starch as an anti-caking agent, both of which are gluten-free ingredients.
No, confectioners' sugar is not keto-friendly because it is 100% carbohydrates. Consuming even small amounts can spike blood sugar levels and kick the body out of ketosis.
Granulated sugar consists of coarse crystals, while confectioners' sugar is granulated sugar ground into a fine powder. Confectioners' sugar also contains about 3% cornstarch to prevent clumping and dissolves much faster, making it ideal for icings and glazes.
You cannot substitute them 1:1 in recipes like frosting because the texture will be gritty. However, you can make a substitute by blending 1 cup of granulated sugar with 1 tablespoon of cornstarch in a high-speed blender until it reaches a powdery consistency.
confectioners' sugar is a versatile ingredient found in cuisines around the world. With 389 calories per 100g and valuable grams of protein, it's a nutritious addition to many dishes.
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Browse recipes →Cornstarch is added as an anti-caking agent to prevent the fine sugar particles from absorbing moisture and clumping together. This ensures the sugar remains a free-flowing powder that is easy to sift and mix into smooth frostings.
Store confectioners' sugar in an airtight container in a cool, dry place like a pantry. Because it is highly hygroscopic (absorbs moisture), keeping it sealed is essential to prevent it from hardening or absorbing odors from the environment.
Confectioners' sugar has an indefinite shelf life if stored properly in a dry environment. While it doesn't 'spoil' in a way that makes it unsafe, it can develop lumps or absorb off-flavors over several years if the packaging is not airtight.