Convert sugar cups to grams by type — granulated, packed brown, caster, and powdered — each with its standard convention.
Volume measures depend on how the ingredient is packed, so a cup of flour can weigh anywhere from about 120 g (fluffed and levelled) to 160 g (scooped and packed). That's why serious bakers weigh ingredients.
This converter uses widely published reference weights and tells you the convention behind each one. When sources disagree — flour is the famous case — we say so rather than pretending there's a single answer.
| Ingredient | Per US cup | Convention |
|---|---|---|
| Granulated sugar | 200 g | near-universal standard |
| Caster / superfine sugar | 190 g | King Arthur 'Baker's Special' |
| Light brown sugar (packed) | 213 g | packed — recipe standard |
| Dark brown sugar (packed) | 213 g | packed |
| Powdered sugar (unsifted) | 113 g | confectioners', unsifted |
| Powdered sugar (sifted) | 100 g | sifted |
| Turbinado / raw sugar | 180 g | — |
| Demerara sugar | 200 g | — |
| Cinnamon-sugar | 200 g | King Arthur |
| Honey | 336 g | by weight; liquid |
| Maple syrup | 322 g | — |
| Molasses | 340 g | — |