Cups to Grams Converter: Quick and Easy Conversion

Why cups don't have one gram value

A "cup" is a volume, and a gram is a mass, so the conversion depends entirely on how dense the ingredient is. Flour is light and full of air pockets; salt packs tightly. This tool stores a separate gram-per-cup figure for each of its nine ingredients rather than using one blanket number.

The figures it uses (grams per cup)

Worked example

2 cups of brown sugar = 2 × 220 = 440 grams. Swap the ingredient to butter for the same 2 cups and the answer changes to 454 grams, even though the volume on the measuring cup looks identical.

Where these numbers come from

They're the standard baking references used by US recipe publishers (King Arthur Baking and similar sources cite the same 125 g/cup for scooped, unsifted all-purpose flour). Scooping versus spooning-and-leveling flour can shift the real weight by 10-15%, so treat these as good defaults rather than lab-precise figures.