Cooking conversions
Cups to grams converter
Working from an American recipe with a metric scale? Enter the cup amount, pick the ingredient, and get the exact weight in grams.
Grams
250g
2 cups of all-purpose flour = 250 g
How to convert cups to grams
Multiply the number of cups by the ingredient's grams-per-cup density. Two cups of all-purpose flour is 2 × 125 = 250 g, while two cups of packed brown sugar is 2 × 220 = 440 g. The converter above uses US cups of 240 ml.
Weighing ingredients instead of scooping them removes the biggest source of error in baking: a tightly scooped cup of flour can hold 20% more than a lightly spooned one.
Quick reference
- 1 cup all-purpose flour = 125 g
- 1 cup granulated sugar = 200 g
- 1 cup butter = 227 g
- 1 cup milk = 245 g
- 1 cup honey = 340 g
Worked example: 2 cups of granulated sugar to grams
Granulated sugar weighs 200 g per cup. Multiply 2 cups × 200 = 400 g. Two cups of packed brown sugar (220 g/cup) would be 440 g instead — the ingredient choice changes the answer by 10%.
Frequently asked questions
How many grams is 1 cup of flour?
1 US cup of all-purpose flour is 125 g. Spoon it in and level it off; scooping packs the flour and can add 20% more weight.
How many grams is 1 cup of sugar?
1 cup of granulated sugar is 200 g. Packed brown sugar is heavier at 220 g per cup, and powdered sugar is lighter at 120 g per cup.
Why are my weighed results different from the recipe?
Cup-to-gram conversions depend on how the cup was filled. A recipe author who scoops flour gets a heavier cup than one who spoons it. Weighing removes that variability.
Is 1 cup always 240 ml?
For US recipes, yes — a US legal cup is 240 ml. Metric cups (250 ml) and UK cups (284 ml) differ, so check which system the recipe uses before converting.
Can I convert cups of butter to grams?
Yes — butter is 227 g per cup (2 sticks). The butter converter also shows sticks, tablespoons and ounces in one view.
What if my ingredient is not in the list?
Pick the closest match by density. For dry goods, oats (90 g/cup) and rice (185 g/cup) bracket most pantry items; for liquids, milk (245 g/cup) is a safe stand-in.
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