About the Cups to Grams Converter
This cups to grams converter turns US cup measurements into grams — and grams back into cups — for the ingredients you actually bake with. Because a cup measures volume, not weight, the answer depends on the ingredient: a cup of all-purpose flour weighs about 125 g, a cup of granulated sugar about 200 g and a cup of honey about 339 g. Pick the ingredient, enter the amount and you get grams, ounces and the equivalent in tablespoons.
It is useful when you follow an American recipe with a kitchen scale, convert a European or British recipe written in grams to cups, or want more consistent results. Weighing is far more accurate than scooping: packed flour can weigh 20–30% more than flour that is spooned and levelled.
Weights assume a level US cup of 236.6 ml with dry ingredients spooned in and levelled, brown sugar packed, and figures mostly taken from USDA household measures. Metric cups (250 ml) are about 5.7% larger, and brands vary, so treat results as reliable kitchen estimates.
How to use the cups to grams converter
- 1Choose the ingredient you are measuring.
- 2Pick the direction: cups to grams or grams to cups.
- 3Enter the amount — use decimals such as 0.5 for ½ cup.
- 4Read the converted amount, plus ounces and tablespoons.
- 5Use the table for quick fractions like ⅓ or ¾ cup.
Formula and method
A cup is a volume, so converting it to a weight needs the ingredient’s density — how many grams fit in one level US cup (236.6 ml). The converter multiplies the number of cups by that figure, or divides grams by it to go the other way. Tablespoons are cups × 16, and ounces are grams ÷ 28.35.
The grams-per-cup values are mostly USDA FoodData Central household measures for spooned-and-levelled dry goods, packed brown sugar and liquids. Real weights shift with how you fill the cup, humidity and brand, which is why professional bakers weigh ingredients.
- d
- Grams per level US cup for the chosen ingredient
- c
- Volume in US cups
- g
- Weight in grams
Worked examples
2 cups of all-purpose flour
All-purpose flour weighs about 125 g per level cup, so 2 cups is 250 g, or about 8.8 oz. That is the same as 32 tablespoons.
¾ cup of granulated sugar
Sugar is denser than flour at 200 g per cup, so three-quarters of a cup weighs 150 g — about 5.3 oz.
500 g of butter to cups
A cup of butter weighs about 227 g (two US sticks). 500 g ÷ 227 g ≈ 2.2 cups, or a little over 35 tablespoons.
Frequently asked questions
How many grams are in 1 cup of flour?+
One level US cup of all-purpose flour weighs about 120–125 g when spooned and levelled. Scooped straight from the bag it can reach 140–150 g, which is why weighing flour gives more consistent bakes.
How many grams are in 1 cup of sugar?+
A US cup of granulated sugar weighs about 200 g. Packed brown sugar is heavier at about 220 g, and unsifted powdered sugar is much lighter at about 120 g per cup.
Why can’t I convert cups to grams with one number?+
Cups measure volume and grams measure mass. Ingredients have different densities, so a cup of honey weighs almost three times as much as a cup of flour. You need an ingredient-specific conversion.
Is a US cup the same as a metric cup?+
No. A US cup is 236.6 ml, while the metric cup used in Australia, Canada and New Zealand is 250 ml — about 5.7% larger. A UK imperial cup (rarely used today) is 284 ml.
How many grams is 1 cup of butter?+
One US cup of butter is 227 g, which equals two standard US sticks of 113 g each, or 16 tablespoons. Use the butter converter for sticks, tablespoons and ounces.
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