Cups to Grams Converter
Convert cups to grams for flour, sugar, butter and more.
Based on a 240 ml US cup. Weights are averages — brands and packing vary, so prefer a recipe’s stated grams when given.
Volume out, weight in
A cup measures space, not mass — so a cup of feathery flour and a cup of dense sugar weigh wildly different amounts. Converting to grams removes that guesswork, which is why serious baking weighs ingredients.
grams = cups × grams-per-cup (for that ingredient)
Each ingredient has its own grams-per-cup figure based on how it packs. Pick the ingredient and amount, and the converter handles the rest, with ounces and tablespoons alongside.
1 cup of all-purpose flour weighs about 125 g, while 1 cup of granulated sugar is about 200 g — the same volume, very different weights, because they pack so differently.
Why bakers weigh
Weighing is faster, cleaner and far more repeatable than scooping. Flour is the big offender — a heavy hand can add 30% — so a scale is the single best upgrade for consistent bakes. These averages are a fine substitute when a scale is not to hand.
Cook’s notes
- Flour varies most. Spoon and level, or better, weigh it.
- Liquids are simple. A cup of water is about 240 g.
- Trust the recipe. Use its grams over a generic average when given.