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Why cups to grams depends on the ingredient
Cups measure volume and grams measure weight, so the answer depends on how dense the ingredient is. A US cup of all-purpose flour weighs about 125 g, while a cup of granulated sugar weighs about 200 g.
| Ingredient | 1 cup | 1 tbsp | 1 tsp |
|---|---|---|---|
| All-purpose flour | 125 g | 7.8 g | 2.6 g |
| Granulated sugar | 200 g | 12.5 g | 4.2 g |
| Brown sugar (packed) | 213 g | 13.3 g | 4.4 g |
| Powdered sugar | 120 g | 7.5 g | 2.5 g |
| Butter | 227 g | 14.2 g | 4.7 g |
| Honey | 340 g | 21.2 g | 7.1 g |
| Water | 237 g | 14.8 g | 4.9 g |
| Milk | 245 g | 15.3 g | 5.1 g |
| Vegetable oil | 218 g | 13.6 g | 4.5 g |
| Rolled oats | 90 g | 5.6 g | 1.9 g |
| Cocoa powder | 85 g | 5.3 g | 1.8 g |
| Uncooked white rice | 185 g | 11.6 g | 3.9 g |
These are typical values for US cups (about 237 ml). How you scoop and pack an ingredient changes its weight noticeably, so for the most accurate baking use a kitchen scale.
📖 Guide: Cups to Grams: A Baker's Guide to Converting Ingredients
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Frequently asked questions
How many grams are in a cup of flour?
About 125 g for all-purpose flour, using a US cup.
Why do cups and grams differ by ingredient?
Different ingredients have different densities, so the same volume weighs a different amount.
Is a US cup the same as a metric cup?
No. A US cup is about 237 ml, and a metric cup used in Australia and New Zealand is 250 ml. This converter uses US cups.
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