Grams to Cups Converter
ConversionsPick grams to cups or cups to grams, choose the ingredient and enter the amount. A cup of flour does not weigh the same as a cup of sugar or butter, so the converter uses the weight per cup of each ingredient and shows it.
Step by step
cups = 250 g / 123.26 g per cup = 2.028
- One cup of this ingredient weighs 123.26 g, which is its density times 236.5882365 mL.
- Divide your grams by the weight of a cup: 250 / 123.26 = 2.028.
- In tablespoons: 2.028 × 16 = 32.45. In teaspoons: 2.028 × 48 = 97.4.
- The volume in milliliters is 2.028 × 236.5882365 = 479.8 mL.
Once every entry is valid, you’ll see each step of the calculation here.
Formula
- density
- the mass of one milliliter of the ingredient in grams, from the FAO/INFOODS Density Database (for honey, from Wikipedia)
- 236.5882365
- milliliters in one US customary cup, exact by definition
- grams per cup
- the weight of one level cup of the ingredient
- cups
- the volume in US customary cups
How it works
Cups measure volume and grams measure weight, so the conversion needs the weight of one cup of your ingredient. A cup of flour weighs far less than a cup of sugar, and a cup of honey weighs more than either. The converter takes the ingredient's density from a table, multiplies it by the volume of a US cup (236.5882365 mL) to get the grams in one cup, and divides your grams by that number. For example, 250 g of all-purpose flour at 123.26 g per cup is 250 / 123.26 = 2.03 cups. For cups to grams it multiplies instead: 1.5 cups of the same flour weigh 1.5 × 123.26 = 184.9 g.
This page uses the US customary cup of 8 US fluid ounces, which is 236.59 mL. Nutrition Facts labels round a cup to 240 mL by FDA rule (21 CFR 101.9), but that applies to the serving sizes on those labels and not to what a recipe or a package means by a cup. The metric cup of 250 mL used in Canada and Australia is about 5.7% larger than the US cup. A tablespoon is a sixteenth of a US cup and a teaspoon is a third of a tablespoon.
The weights come from densities in the FAO/INFOODS Density Database (bulk densities for powders and grains, mass densities for liquids and fats) and, for honey, from the 1.38 to 1.45 kg/L that Wikipedia gives. They are averages, not exact weights. Flour and powdered sugar settle and fluff up, which is why a scooped cup can weigh noticeably more than a spooned and leveled one, and volume measures of flour can vary by about 20%. The database lists several entries for wheat flour (0.48, 0.521, 0.58 and 0.67 g/mL, which would put a cup at 114 to 159 g), and this page uses the 0.521 g/mL entry, which the database credits to Stumbo and Weiss (2011), for all-purpose flour. Use the converter for planning, and when your recipe gives its own weight for a cup, enter it under "Other". For related conversions, see the cups to ounces converter, the tablespoons in a cup converter, the grams to pounds converter, the grams to kg converter and the mL to oz converter.
The formula
The cup is exact. A US gallon is 231 cubic inches, an inch is exactly 2.54 cm, so a gallon is 3,785.411784 mL, and a cup, a sixteenth of it, is 236.5882365 mL. The density of an ingredient changes with how it is packed, so the table values are typical figures. Where the table gives a range, as for rolled oats at 0.30 to 0.38 g/mL, the converter uses the middle. Honey takes the middle of the 1.38 to 1.45 kg/L that Wikipedia gives at 20 °C.
The cup fraction is rounded to the nearest eighth of a cup, halves rounding up, so 0.96 cup shows as 1 and 2.03 cups show as 2. Amounts below one sixteenth of a cup show 0, and the tablespoons and teaspoons then give a better idea. The density table lists the weight of a cup and of a tablespoon for all 17 ingredients, and the cup fraction chart follows the ingredient you chose.
Example
A European recipe calls for 250 g of all-purpose flour. How many cups is that?
- One cup of all-purpose flour weighs 123.26 g, which is its density of 0.521 g/mL times 236.5882365 mL.
- Divide: 250 / 123.26 = 2.028 cups, so about 2 cups, or 32.45 tablespoons.
- Cup measures of flour vary, so a scale gives a better result: a scooped cup can weigh more than a spooned and leveled one, and the difference can reach about 20%.
250 g is 2.028 cups at 123.26 g per cup. To the nearest 1/8 cup that is 2, and in tablespoons it is 32.45.
Load this example into the calculatorFrequently asked questions
How do I convert grams to cups?
Divide the grams by the weight of one cup of the ingredient. A cup of all-purpose flour weighs about 123 g, so 250 g is 250 / 123.26 = 2.03 cups. Choose the ingredient above and the converter uses its weight per cup and shows the steps.
How many grams are in a cup?
It depends on the ingredient, because a cup measures volume. Using the table on this page, a cup of rolled oats is about 80 g, all-purpose flour 123 g, granulated sugar 208 g, butter 216 g (227 g if you count 2 sticks as a cup), water 236 g and honey 335 g. There is no single answer for all foods.
How many grams are in 1/2 cup of vegetable oil?
About 108.8 g. A cup of vegetable oil weighs 217.7 g, using a density of 0.92 g/mL, so half a cup is 108.8 g. As a volume, half a cup is 118.3 mL, or 4 fluid ounces.
How many grams are in a cup of oats?
About 80 g of rolled oats. The FAO table gives 0.30 to 0.38 g/mL, which is 71 to 90 g per cup, and the converter uses the middle, 80.4 g. Quick oats, steel-cut oats and oat flour weigh differently, so use "Other" if you know their weight per cup.
How do I convert grams to fluid ounces?
Fluid ounces measure volume, so you need the density. Divide the grams by the density in g/mL, then by 29.5735 mL per fluid ounce. For water, 1 g is about 0.034 fl oz, so 236 g is 8 fl oz, one cup. Flour is lighter: 100 g of flour is about 6.5 fl oz.
What is the easiest way to measure grams?
Use a digital kitchen scale. Put the empty bowl on it, press the tare or zero button, add the ingredient until the display shows the grams you need, and tare again before the next ingredient. It is quicker than cups and more accurate, especially for flour.
How much is 200 grams in cups?
It depends on the ingredient. 200 g is 1.62 cups of all-purpose flour (about 1 5/8), 0.96 cup of granulated sugar, 0.93 cup of butter, 0.85 cup of water and 2.49 cups of rolled oats. Choose your ingredient above to see the exact amount and the steps.
How much is 250 grams in cups?
It depends on the ingredient. 250 g is 2.03 cups of all-purpose flour, 1.20 cups of granulated sugar, 1.16 cups of butter, 1.06 cups of water and 0.75 cup of honey. The converter shows the amount for your ingredient, with tablespoons and milliliters.
Why does a cup of each ingredient weigh something different?
Because ingredients differ in density, and powders also differ in how much air they hold. Flour is full of air and weighs about 123 g per cup, while sugar crystals pack closer, about 208 g. Honey is denser than water, so a cup of honey weighs about 335 g.
How accurate are cup measurements?
Not very accurate. How you fill the cup changes the weight, and volume measures of flour can vary by about 20%. A spooned and leveled cup is lighter than one scooped from the bag. For baking, weigh the ingredients, and use cups for rough amounts.
How big is a US cup in milliliters?
The US customary cup is 8 US fluid ounces, or 236.5882365 mL. On Nutrition Facts labels, FDA rules round a cup to 240 mL for serving sizes (21 CFR 101.9), which does not change what a recipe or a package means by a cup. A metric cup is 250 mL.
Can I use this converter for 250 mL metric cups?
Yes, with one adjustment. A 250 mL cup is 5.7% larger than a US cup. For cups to grams, multiply the result by 1.0567. For grams to cups, multiply the result by 0.9464, because fewer of the larger cups are needed.
How many grams are in a stick of butter?
A US stick of butter is 1/4 pound, which is 113 g. By density, half a cup of butter weighs about 108 g, so a stick is a little more than half a cup. Recipes usually count 2 sticks as 1 cup, or 227 g, while the table gives 215.5 g for butter that exactly fills a cup.
What if my ingredient is not listed, like brown sugar?
Choose "Other" and enter what one cup of it weighs, from the package, your recipe or a kitchen scale, and the converter does the rest. Brown sugar is not in the table because the FAO/INFOODS database has no value for it, and its weight per cup depends on how firmly it is packed.
How do I convert cups to grams?
Multiply the cups by the weight of one cup of the ingredient. A cup of all-purpose flour weighs 123.26 g, so 2 cups weigh 246.5 g. Pick "cups → grams" above, choose the ingredient and type the number of cups.
- FAO/INFOODS Density Database Version 2.0 (2012): bulk and mass densities of foods, used for every ingredient except honey (FAO, Food and Agriculture Organization of the United Nations)
- NIST Handbook 44 (2026), Appendix C: General Tables of Units of Measurement (cup, tablespoon, teaspoon and fluid ounce) (National Institute of Standards and Technology)
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (cup, tablespoon, teaspoon, ounce) (National Institute of Standards and Technology)
- 21 CFR 101.9, Nutrition labeling of food (household measures in milliliters for nutrition labeling) (Legal Information Institute, Cornell Law School)
- Cooking weights and measures: volume measures of flour and the stick of butter (Wikipedia)
- Honey: density between 1.38 and 1.45 kg/L at 20 °C (Wikipedia)
- Cup (unit): US customary, legal and metric cups (Wikipedia)