How Many Grams Are in a Cup?
It depends on the ingredient — a cup measures volume while grams measure weight. A cup of all-purpose flour weighs about 120 g, granulated sugar 200 g, and butter 227 g.
Grams per 1 US cup, by ingredient
| Ingredient | Grams per cup |
|---|---|
| All-purpose flour (spooned & leveled) | 120 g |
| Bread flour | 127 g |
| Granulated sugar | 200 g |
| Brown sugar (packed) | 220 g |
| Powdered sugar (unsifted) | 120 g |
| Butter(2 sticks) | 227 g |
| Water | 237 g |
| Milk | 245 g |
| Honey or maple syrup | 340 g |
| Rolled oats | 90 g |
| Uncooked white rice | 185 g |
| Cocoa powder | 85 g |
Good to know
There is no single grams-per-cup number because cups measure space and grams measure mass — honey is nearly three times heavier per cup than oats.
For flour, how you fill the cup changes the weight by up to 30%. Spoon flour into the cup and level it (about 120 g); scooping straight from the bag packs it to 140-150 g and makes baked goods dense.
If you bake regularly, a $15 kitchen scale removes all of this ambiguity — most serious baking recipes now list grams first.
Frequently asked questions
How many grams is 1 cup of flour?
One US cup of all-purpose flour, spooned and leveled, weighs about 120 grams.
How many grams is 1 cup of sugar?
One US cup of granulated sugar weighs about 200 grams. Packed brown sugar is about 220 grams.
Is 250 g one cup?
Only for a few dense ingredients. A cup of water is 237 g, butter is 227 g, and flour is just 120 g.
How many grams is 1 cup of water?
One US cup of water weighs 237 grams (236.6 ml).
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