🥄 Grams to Cups Converter
Convert between grams and cups for common baking ingredients, since a cup of flour and a cup of sugar don’t weigh the same amount.
Why grams and cups aren’t a fixed conversion
A cup is a unit of volume, but a gram is a unit of weight, so the conversion between them depends on how dense the ingredient is. A cup of flour weighs far less than a cup of butter or sugar because flour is light and full of air pockets, while butter and sugar pack more densely.
How this calculator works
Select your ingredient and this tool applies its typical density in grams per cup, based on commonly used baking references, then converts your amount in either direction.
- 1 cup all-purpose flour ≈ 120 g
- 1 cup granulated sugar ≈ 200 g
- 1 cup butter ≈ 227 g
- 1 cup water or milk ≈ 240 g
These are standard approximate values used in most recipes; actual weight can vary slightly depending on how an ingredient is packed or sifted, so for critical baking use a kitchen scale where possible.