Grams measure mass precisely; cups measure volume. To convert weight to cups you need the ingredient: a cup of flour, sugar, or cocoa has a different mass. The table below shows common gram amounts including kilograms (1000 g) so you can read large-package sizes quickly alongside smaller amounts.
How to convert grams to cups
Divide grams by grams per cup for that ingredient. Grams-per-cup comes from density; spoons and cups pack differently, so weighing is still the gold standard.
It depends on the ingredient. 100 g of water measures just under half a cup, whereas 100 g of aerated all-purpose flour fills almost an entire cup. Because of this variation, you should always match the gram weight to the specific ingredient. Always pair grams with the specific food.
When should I use grams versus kilograms in baking?
Use grams for typical recipe amounts; switch mentally to kg only for bulk bags (1000 g = 1 kg). Digital scales can display either on many models.
Why do two powders fill a cup differently?
Crystal size, oil content, and how tightly you pack change the mass in the same measuring cup. Cocoa and cornstarch behave differently than granulated sugar.
Is the table accurate enough to scale a whole cake?
For rough scaling, yes. For competition-level precision, weigh every layer and note humidity and brand changes.