Cups to Grams Calculator

1 US cup of all-purpose flour weighs approximately 120 grams. This calculator uses that standard density, so entering 1 cup with 'All-purpose flour' selected returns 120g. If your recipe was written with a different flour weight (some sources use 125g or 130g per cup), your results may vary slightly - always check the recipe's source if precision matters.

Grams = Cups x 120 for all-purpose flour (the standard density used by this calculator). For other ingredients, replace 120 with that ingredient's grams-per-cup value - for example, granulated sugar is 200g per cup and butter is 227g per cup. Select your ingredient from the dropdown and the calculator applies the right density automatically.

1 US cup of granulated sugar weighs approximately 200 grams. Brown sugar is denser when packed, at about 220 grams per cup, while powdered (confectioners) sugar is lighter and closer to 120 grams per cup because it's sifted and less compact.

Cups measure volume, not weight, and how densely an ingredient is packed into the cup changes its weight. Scooping flour directly from the bag packs it more tightly (often 140-150g) than spooning it into the cup and leveling it off (closer to 120g), which is the method most baking references assume. Sifted flour, humidity, and how firmly you tap the cup can all shift the result by 10-20%. This is exactly why many bakers prefer weighing ingredients on a kitchen scale instead of using cup measurements.

250 grams of all-purpose flour is approximately 2.08 cups (250 / 120 = 2.08). Enter 250 in the calculator, select 'All-purpose flour', and switch the direction toggle to 'Grams to Cups' to see this conversion instantly.

Liquids are close to water's density, so 1 cup of water or milk is roughly 236-245 grams - much heavier than 1 cup of a light, airy ingredient like flour or rolled oats. Because density varies so much between ingredients, always select the specific ingredient you're measuring rather than assuming one grams-per-cup figure works for everything.

1 US cup of butter weighs approximately 227 grams (which is also 2 standard sticks of butter, or 454 grams for a full pound of butter). See our dedicated butter converter for conversions between sticks, cups, tablespoons, grams, and ounces.

Yes. Use the 'Grams to Cups' toggle, select your ingredient, and enter the weight in grams. The calculator divides by that ingredient's grams-per-cup value to give you the equivalent in cups.

The values used here are standard reference densities widely used in baking (spooned-and-leveled measurements). They're accurate enough for most home baking, but for recipes where precision really matters - like bread or pastry - weighing ingredients directly on a kitchen scale using the recipe's stated gram amounts will always be more reliable than any cups-to-grams conversion.