15 Grams to Cups: The Answer Depends on the Ingredient
15 grams to cups is not one universal number. Flour, sugar, butter, oats, water, and rice all fill a cup differently, so this page gives the comparison Google snippets usually skip.
Quick answer
15g equals 1/8 cup all-purpose flour, but 1/8 cup granulated sugar.
If your recipe just says "15 grams to cups," choose the ingredient first. That is the difference between a useful conversion and a dry cake.
15g to Cups by Ingredient
| Ingredient | Spoon & Level | Dip & Sweep | Sifted |
|---|---|---|---|
| 15g all-purpose flour | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g granulated sugar | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g brown sugar (packed) | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g powdered sugar | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g butter | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g peanut butter | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g bread flour | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g cake flour | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g whole wheat flour | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g almond flour | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g cocoa powder | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g rolled oats | 1/8 cup | 1/8 cup | 1/4 cup |
| 15g whole milk | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g heavy cream | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g honey | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g olive oil | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g water | 1/8 cup | 1/8 cup | 1/8 cup |
| 15g cooked white rice | 1/8 cup | 1/8 cup | 1/8 cup |
Popular Nearby Conversions
Frequently Asked Questions
15 grams can be a different number of cups depending on the ingredient. For example, 15g all-purpose flour is 1/8 cup, while 15g granulated sugar is 1/8 cup.
Cups measure volume, while grams measure weight. Flour, sugar, butter, oats, and liquids have different densities, so the same gram weight fills a different cup volume.
Choose the exact ingredient first, then use the ingredient-specific conversion. Spoon & Level is the recommended method for dry baking ingredients.