Cooking Measurement Converter | Convert cups, grams and ounces accurately
Convert cups to grams, ounces, millilitres and tablespoons with the correct density for each ingredient. Flour, sugar, butter, rice and more, plus a full kitchen conversion chart.
Common conversions
The conversions people look up most often. Click any one to load it into the converter.
Cups to grams for common ingredients
One US cup is 236.6 ml. Because ingredients have different densities, that same cup weighs a very different amount depending on what is in it.
| Ingredient | 1 cup | 1/2 cup | 1/3 cup | 1 tbsp |
|---|---|---|---|---|
| Water | 236.6 g | 118.3 g | 78.87 g | 14.79 g |
| All-purpose flour | 125 g | 62.5 g | 41.67 g | 7.81 g |
| Bread flour | 127 g | 63.5 g | 42.33 g | 7.94 g |
| Cake flour | 114 g | 57 g | 38 g | 7.13 g |
| Whole wheat flour | 120 g | 60 g | 40 g | 7.5 g |
| Granulated sugar | 200 g | 100 g | 66.67 g | 12.5 g |
| Brown sugar (packed) | 213 g | 106.5 g | 71 g | 13.31 g |
| Powdered sugar | 120 g | 60 g | 40 g | 7.5 g |
| Butter | 227 g | 113.5 g | 75.67 g | 14.19 g |
| Milk | 245 g | 122.5 g | 81.67 g | 15.31 g |
| Heavy cream | 232 g | 116 g | 77.33 g | 14.5 g |
| Vegetable oil | 218 g | 109 g | 72.67 g | 13.63 g |
| Honey | 340 g | 170 g | 113.3 g | 21.25 g |
| Maple syrup | 315 g | 157.5 g | 105 g | 19.69 g |
| Rice (uncooked) | 185 g | 92.5 g | 61.67 g | 11.56 g |
| Rolled oats | 90 g | 45 g | 30 g | 5.63 g |
| Cocoa powder | 85 g | 42.5 g | 28.33 g | 5.31 g |
| Cornstarch | 128 g | 64 g | 42.67 g | 8 g |
| Table salt | 273 g | 136.5 g | 91 g | 17.06 g |
| Baking powder | 230 g | 115 g | 76.67 g | 14.38 g |
| Baking soda | 220 g | 110 g | 73.33 g | 13.75 g |
| Yogurt | 245 g | 122.5 g | 81.67 g | 15.31 g |
| Peanut butter | 258 g | 129 g | 86 g | 16.13 g |
| Chocolate chips | 170 g | 85 g | 56.67 g | 10.63 g |
| Chopped nuts | 120 g | 60 g | 40 g | 7.5 g |
| Breadcrumbs (dry) | 108 g | 54 g | 36 g | 6.75 g |
| Grated parmesan | 100 g | 50 g | 33.33 g | 6.25 g |
Converting cups to grams and back
A cup measures volume, the space an ingredient takes up. A gram measures weight. Converting between the two is only possible if you know how heavy the ingredient is for its size, which is called its density. That is why one cup of flour is about 125 g while one cup of honey is about 340 g, even though both fill exactly the same cup.
Why most conversion charts get this wrong
Plenty of charts publish a single "1 cup = 240 g" figure. That number is only true for water. Using it for flour makes almost every baking recipe wrong by nearly half, which is why cakes come out dense and dough comes out dry. This converter asks which ingredient you are measuring and uses the right density for it.
How to use it
- Type the amount. Fractions work: enter 3/4 or 1 1/2 exactly as you would write them in a recipe.
- Pick the unit you have and the unit you want.
- Choose the ingredient. This only matters when you cross between volume and weight, and the tool tells you when it does not.
Kitchen accuracy tips
- For baking, weigh in grams whenever you can. A scale removes the guesswork that cups cannot.
- Spoon flour into the cup and level it off. Scooping straight from the bag compacts the flour and adds up to 20% more.
- Brown sugar is the exception: it is meant to be packed down firmly.
- A US cup is 236.6 ml, but a metric cup is 250 ml and an Australian tablespoon is 20 ml, not 15 ml.
- Measure liquids at eye level in a jug, not in a dry measuring cup.
Frequently asked questions
It depends entirely on the ingredient. One US cup holds 236.6 ml of space, and what that space weighs varies: water is about 237 g, all-purpose flour about 125 g, granulated sugar about 200 g, butter 227 g and honey around 340 g. There is no single correct answer, which is why this converter asks you which ingredient you are measuring.
A US cup is exactly 8 fluid ounces. Careful though: a fluid ounce measures volume, while an ounce on a scale measures weight, and they are only the same number for water. One cup of flour is 8 fluid ounces but weighs about 4.4 ounces.
There are 16 tablespoons in a US cup, and 3 teaspoons in a tablespoon, so a cup is also 48 teaspoons. Half a cup is 8 tablespoons, a third of a cup is 5 tablespoons plus 1 teaspoon, and a quarter cup is 4 tablespoons.
In the US, one stick of butter is half a cup: 8 tablespoons, 4 ounces, or about 113 g. A full cup of butter is two sticks, which is 227 g.
No. A US customary cup is 236.6 ml, the metric cup used in Australia, New Zealand and much of Europe is 250 ml, and a Japanese cup is 200 ml. This converter uses the US cup because that is what American recipes mean. The difference is about 5%, which matters in baking but rarely in cooking.
Yes. Type fractions the way recipes write them: 3/4, 1/2, 2/3 all work, and so do mixed numbers such as 1 1/2 or 2 1/4. Decimals like 0.75 work too.
A pound is 453.6 g, so the cup count depends on the ingredient. A pound of all-purpose flour is about 3.6 cups, a pound of granulated sugar is about 2.3 cups, a pound of butter is exactly 2 cups, and a pound of powdered sugar is about 3.8 cups.
Usually because of how the cup was filled rather than the maths. Flour scooped straight from the bag can weigh 150 g per cup instead of 125 g, which is a 20% error before you start. Spoon it in loosely and level the top, or weigh it. Also check whether the recipe is using US or metric cups.
How many grams are in a cup?
A US cup holds 236.6 ml, but its weight depends on what you put in it: about 125 g of all-purpose flour, 200 g of granulated sugar, 227 g of butter or 237 g of water. Pick your ingredient above and the converter applies the correct density instead of a single generic number.