Cups to grams converter
A cup of flour weighs 125 g, a cup of sugar 200 g and a cup of butter 227 g. Cups measure volume, so the grams depend on the ingredient: choose it below.
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Fractions work: 1/2, 3/4, 1 1/2.
1 US cup of all-purpose flour =
125g
Also written as 4.41 oz by weight
Formula: grams = cups × 125
Show the steps
- USDA weight of 1 cup of all-purpose flour: 125 g.
- 1 × 125 = 125 g
Value used: 1 cup = 125 g, from the USDA record “Wheat flour, white, all-purpose, enriched, bleached” (FDC ID 168894). Source: USDA FoodData Central (SR Legacy), release of April 1, 2019, checked on .
How many grams are in a cup? Chart by ingredient
| Ingredient | 1 cup | 1/2 cup | 1/3 cup | 1/4 cup | 1 tbsp | USDA record |
|---|---|---|---|---|---|---|
| All-purpose flour | 125 g | 62.5 g | 41.7 g | 31.3 g | 7.8 g | FDC 168894 |
| Bread flour | 137 g | 68.5 g | 45.7 g | 34.3 g | 8.6 g | FDC 168896 |
| Granulated sugar | 200 g | 100 g | 66.7 g | 50 g | 12.5 g | FDC 169655 |
| Brown sugar, packed | 220 g | 110 g | 73.3 g | 55 g | 13.8 g | FDC 168833 |
| Brown sugar, unpacked | 145 g | 72.5 g | 48.3 g | 36.3 g | 9.1 g | FDC 168833 |
| Powdered sugar, unsifted | 120 g | 60 g | 40 g | 30 g | 7.5 g | FDC 169656 |
| Powdered sugar, sifted | 100 g | 50 g | 33.3 g | 25 g | 6.3 g | FDC 169656 |
| Butter | 227 g | 113.5 g | 75.7 g | 56.8 g | 14.2 g | FDC 173410 |
| Whole milk | 244 g | 122 g | 81.3 g | 61 g | 15.3 g | FDC 171265 |
| Water | 237 g | 118.5 g | 79 g | 59.3 g | 14.8 g | FDC 173647 |
| Honey | 339 g | 169.5 g | 113 g | 84.8 g | 21.2 g | FDC 169640 |
| Olive oil | 216 g | 108 g | 72 g | 54 g | 13.5 g | FDC 171413 |
| Canola oil | 218 g | 109 g | 72.7 g | 54.5 g | 13.6 g | FDC 172336 |
| White rice, uncooked | 185 g | 92.5 g | 61.7 g | 46.3 g | 11.6 g | FDC 168877 |
| Rolled oats, dry | 81 g | 40.5 g | 27 g | 20.3 g | 5.1 g | FDC 173904 |
| Cocoa powder, unsweetened | 86 g | 43 g | 28.7 g | 21.5 g | 5.4 g | FDC 169593 |
| Cornstarch | 128 g | 64 g | 42.7 g | 32 g | 8 g | FDC 169698 |
| Table salt | 292 g | 146 g | 97.3 g | 73 g | 18.3 g | FDC 173468 |
| Almonds, whole | 143 g | 71.5 g | 47.7 g | 35.8 g | 8.9 g | FDC 170567 |
| Almonds, ground | 95 g | 47.5 g | 31.7 g | 23.8 g | 5.9 g | FDC 170567 |
The 1 cup column is the household measure published by the USDA for each food. The other columns are that weight divided: 1 tablespoon is 1/16 of a cup. For butter and honey the USDA also lists a tablespoon directly (14.2 g and 21 g).
How to convert cups of all-purpose flour to grams
Multiply the number of cups by the weight of one cup of that ingredient. For all-purpose flour, one US cup (1 cup in the USDA record) weighs 125 g, so the formula is grams = cups × 125.
To go from grams to cups, divide instead. There is no single cups-to-grams factor because a cup is a volume of 236.588 mL and each food has its own density and its own way of settling in the cup.
Worked example: common amounts of all-purpose flour
| US cups | Grams |
|---|---|
| 1/4 | 31.3 g |
| 1/3 | 41.7 g |
| 1/2 | 62.5 g |
| 2/3 | 83.3 g |
| 3/4 | 93.8 g |
| 1 | 125 g |
| 1 1/2 | 187.5 g |
| 2 | 250 g |
Why does a cup of flour weigh less than a cup of sugar?
Flour is a fine powder with a lot of air between the particles, so a cup of it weighs 125 g. Sugar crystals are denser and pack tighter: 200 g per cup. Liquids are heavier still: milk is 244 g and honey 339 g per cup. How you fill the cup changes the number too. In the USDA data, brown sugar is 220 g packed and 145 g unpacked, and powdered sugar is 120 g unsifted and 100 g sifted.
Cups to grams questions
How many grams are in a cup?
It depends on the ingredient. In USDA FoodData Central, one US cup weighs 125 g for all-purpose flour, 200 g for granulated sugar, 220 g for packed brown sugar, 227 g for butter, 244 g for whole milk and 339 g for honey.
How many grams is 1 cup of flour?
One US cup of all-purpose flour is 125 g in USDA data. Bread flour is listed at 137 g per cup. If you scoop straight from the bag and pack the cup, you can get noticeably more, which is why bakers weigh flour.
How many grams is 1 cup of sugar?
One US cup of granulated sugar is 200 g. Brown sugar is 220 g packed and 145 g unpacked; powdered sugar is 120 g unsifted and 100 g sifted.
How many grams is 1 cup of butter?
One US cup of butter is 227 g, which is two sticks. One stick is 113 g and one tablespoon is 14.2 g in USDA data.
Is a US cup the same as a metric cup?
No. The weights here are for the US cup of 8 US fluid ounces (236.588 mL). Recipes from metric countries often use a 250 mL cup, about 6% larger; we did not confirm that value in an official source, so check your recipe.
Why does my cup of flour weigh more than 125 g?
The USDA figure is an average for a level cup. Scooping compacts the flour, humidity adds weight, and different brands grind differently. For baking, trust the scale over the cup.
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Sources and limits
- USDA FoodData Central (SR Legacy)
FoodData Central, SR Legacy release of April 2019: household measures (“Measures” tab of each food).
U.S. Department of Agriculture, Agricultural Research Service. Edition or effective date: . Text in force when checked on .
- NIST Handbook 44 (2026), Appendix C
NIST Handbook 44-2026, Appendix C: General Tables of Units of Measurement.
National Institute of Standards and Technology. Edition or effective date: . Text in force when checked on .
- 21 CFR 101.9(b)(5)(viii)
Code of Federal Regulations, Title 21, § 101.9(b)(5)(viii): household measures for nutrition labeling (text in force when checked).
U.S. Food and Drug Administration. Text in force when checked on .
This is a calculation aid, not an official measurement service. Results are rounded to 6 significant digits for display. For trade, engineering, medical dosing or legal documents, confirm the figure in the official source. Nothing you type leaves your browser.