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Cups to grams converter
Turn an American recipe's cups and spoons into grams for flour, sugar, butter and twelve more ingredients. 1 cup of all-purpose flour is 125 g; 1 cup of sugar is 200 g. Published USDA weights, with their source.
Cups to grams chart
Cup measures in grams, by ingredient
A cup measures space, not weight, so every ingredient has its own number. Read across for the measuring cup you are holding. Weights are USDA FoodData Central values for one US cup, multiplied and rounded to the nearest gram.
| Ingredient | ¼ cup | ⅓ cup | ½ cup | ⅔ cup | ¾ cup | 1 cup | 2 cups |
|---|---|---|---|---|---|---|---|
| All-purpose flour | 31 g | 42 g | 63 g | 83 g | 94 g | 125 g | 250 g |
| Whole wheat flour | 30 g | 40 g | 60 g | 80 g | 90 g | 120 g | 240 g |
| Granulated sugar | 50 g | 67 g | 100 g | 133 g | 150 g | 200 g | 400 g |
| Brown sugar, packed | 55 g | 73 g | 110 g | 147 g | 165 g | 220 g | 440 g |
| Powdered sugar, unsifted | 30 g | 40 g | 60 g | 80 g | 90 g | 120 g | 240 g |
| Butter | 57 g | 76 g | 114 g | 151 g | 170 g | 227 g | 454 g |
| Cocoa powder, unsweetened | 22 g | 29 g | 43 g | 57 g | 65 g | 86 g | 172 g |
| Rolled oats | 20 g | 27 g | 41 g | 54 g | 61 g | 81 g | 162 g |
| White rice, long-grain, uncooked | 46 g | 62 g | 93 g | 123 g | 139 g | 185 g | 370 g |
| Honey | 85 g | 113 g | 170 g | 226 g | 254 g | 339 g | 678 g |
| Maple syrup | 79 g | 105 g | 158 g | 210 g | 236 g | 315 g | 630 g |
| Milk, whole | 61 g | 81 g | 122 g | 163 g | 183 g | 244 g | 488 g |
| Water | 59 g | 79 g | 119 g | 158 g | 178 g | 237 g | 474 g |
| Heavy cream | 60 g | 79 g | 119 g | 159 g | 179 g | 238 g | 476 g |
| Vegetable oil (canola) | 55 g | 73 g | 109 g | 145 g | 164 g | 218 g | 436 g |
Tablespoons and teaspoons to grams
A US tablespoon is 1/16 of a cup and a teaspoon is 1/48, so these are the cup weights divided down. For small amounts of leavening or salt, follow a weight the recipe gives, because a few tenths of a gram matter there.
| Ingredient | 1 tbsp | 2 tbsp | 1 tsp | ½ tsp |
|---|---|---|---|---|
| All-purpose flour | 7.8 g | 16 g | 2.6 g | 1.3 g |
| Whole wheat flour | 7.5 g | 15 g | 2.5 g | 1.3 g |
| Granulated sugar | 13 g | 25 g | 4.2 g | 2.1 g |
| Brown sugar, packed | 14 g | 28 g | 4.6 g | 2.3 g |
| Powdered sugar, unsifted | 7.5 g | 15 g | 2.5 g | 1.3 g |
| Butter | 14 g | 28 g | 4.7 g | 2.4 g |
| Cocoa powder, unsweetened | 5.4 g | 11 g | 1.8 g | 0.9 g |
| Rolled oats | 5.1 g | 10 g | 1.7 g | 0.8 g |
| White rice, long-grain, uncooked | 12 g | 23 g | 3.9 g | 1.9 g |
| Honey | 21 g | 42 g | 7.1 g | 3.5 g |
| Maple syrup | 20 g | 39 g | 6.6 g | 3.3 g |
| Milk, whole | 15 g | 31 g | 5.1 g | 2.5 g |
| Water | 15 g | 30 g | 4.9 g | 2.5 g |
| Heavy cream | 15 g | 30 g | 5 g | 2.5 g |
| Vegetable oil (canola) | 14 g | 27 g | 4.5 g | 2.3 g |
The conversions people ask for most
1 cup of flour in grams
125 g of all-purpose flour by the USDA weight, or 120 g by King Arthur Baking's chart. ½ cup is 63 g, ⅓ cup is 42 g and ¼ cup is 31 g. Whole wheat flour is a little lighter: 120 g a cup.
1 cup of sugar in grams
200 g of granulated sugar, 220 g of packed brown sugar. ½ cup of granulated sugar is 100 g.
1 cup of butter in grams
227 g, which is two US sticks. ½ cup is 114 g and ¼ cup is 57 g. For sticks and tablespoons, use the butter converter.
Why your cup may not weigh what the chart says
- How you fill it. Scooping flour from the bag and packing brown sugar put more in the cup than spooning in and leveling. USDA lists brown sugar at 220 g packed and 145 g unpacked.
- Which reference. USDA and King Arthur Baking differ by a few grams on most rows and by about 10 percent on oats, rice and oil. The grams to cups converter shows both side by side.
- Which cup. A US cup is 236.59 ml. A 250 ml metric cup holds about 6 percent more.
- The form of the ingredient. Sifted, chopped, cooked or melted ingredients fill a cup differently. Each row is the form named in its USDA entry.
The surest fix is a kitchen scale. NIST's culinary measurement tips recommend weighing.
Sources
- USDA FoodData Central, SR Legacy household measures, one entry per row: all-purpose flour, whole wheat flour, granulated sugar, brown sugar, packed, powdered sugar, unsifted, butter, cocoa powder, unsweetened, rolled oats, white rice, long-grain, uncooked, honey, maple syrup, milk, whole, water, heavy cream, vegetable oil (canola). Checked October 1, 2026.
- King Arthur Baking, Ingredient weight chart. Checked October 1, 2026.
- NIST, Handbook 44, Appendix C: 1 US cup = 8 US fluid ounces = 236.59 ml = 16 tablespoons = 48 teaspoons.
Good to know
Cups to grams questions
How many grams is 1 cup of all-purpose flour?
USDA FoodData Central lists 125 g. King Arthur Baking lists 120 g. How you fill the cup matters more than the gap between them: scooping straight from the bag packs in more flour than spooning it into the cup and leveling it.
How many grams is ½ cup of flour?
About 63 g by the USDA weight, or 60 g by King Arthur Baking's. ¼ cup is about 31 g.
How many grams is 1 cup of sugar?
Granulated sugar: 200 g (USDA) or 198 g (King Arthur Baking). Packed brown sugar: 220 g (USDA). Powdered sugar, unsifted: 120 g (USDA).
How many grams is a tablespoon?
It depends on the ingredient: about 8 g of all-purpose flour, 12.5 g of granulated sugar, 14 g of butter or 21 g of honey. A tablespoon is 1/16 of a cup, so divide the cup weight by 16.
Is a cup 240 ml or 250 ml?
A US cup is 236.59 ml, often rounded to 240 ml. Recipes from Australia and New Zealand use a 250 ml metric cup, about 6 percent larger. The weights on this page are for a US cup.
Should I convert a whole recipe to grams?
If you bake often, yes: write the grams next to the cups once and weigh from then on. Weighing gives the same result every time, which NIST's kitchen guidance also recommends. Keep the original cups too, so the recipe still reads the way it was written.
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Convert it once, keep it in the binder
Add the grams beside the cups on the recipe's own sheet, so the next person to bake it can weigh instead of guess. The free plan keeps 10 recipes in an online binder you can share by link and print yourself as an A5 PDF.