| US cup amount | Weight |
|---|---|
| 1/8 cup | 15 g |
| 1/4 cup | 30 g |
| 1/3 cup | 40 g |
| 1/2 cup | 60 g |
| 3/4 cup | 90 g |
| 1 cup | 120 g |
| 1 1/2 cups | 180 g |
| 2 cups | 240 g |
Flour Grams to Cups
1 US cup of flour weighs 120 grams. One US cup of all-purpose flour weighs 120 grams when the flour is fluffed, spooned into the cup and leveled. Packing or scooping directly from the bag can add considerably more flour.
Use the converter and charts below for unsifted, fluffed, spooned and leveled.
Grams to Cups Converter
Choose the ingredient before converting because every ingredient has a different weight per cup.
Grams to Cups Converter
Results use the documented ingredient state and one US customary cup.
Divide the gram amount by 120 to calculate US cups. The practical fraction is a measuring aid, not a replacement for the exact gram weight.
| Grams | US cups | Practical reference |
|---|---|---|
| 25 g | 0.21 cups | about 1/4 cup |
| 30 g | 0.25 cups | about 1/4 cup |
| 40 g | 0.33 cups | about 1/3 cup |
| 50 g | 0.42 cups | about 1/2 cup |
| 60 g | 0.5 cups | about 1/2 cup |
| 75 g | 0.62 cups | about 2/3 cup |
| 80 g | 0.67 cups | about 2/3 cup |
| 100 g | 0.83 cups | about 3/4 cup |
| 120 g | 1 cup | about 1 cup |
| 125 g | 1.04 cups | about 1 cup |
| 150 g | 1.25 cups | about 1 1/4 cups |
| 200 g | 1.67 cups | about 1 2/3 cups |
| 250 g | 2.08 cups | about 2 cups |
| 300 g | 2.5 cups | about 2 1/2 cups |
| 400 g | 3.33 cups | about 3 1/3 cups |
| 500 g | 4.17 cups | about 4 1/4 cups |
Stir the flour in its container, spoon it lightly into a dry measuring cup and sweep the top flat. Do not shake, tap or press the cup. A scale is still the better choice when the recipe supplies grams.
Grams = cups × 120
One cup is 120 grams, one-half cup is about 60 grams and one-quarter cup is about 30 grams.
Common uses
- Cookies and brownies
- Cakes and muffins
- Bread dough and pizza dough
All-purpose flour is the default on this page. Swap the flour and the weight of a cup moves, which is why a recipe written in cups does not transfer cleanly between flour types.
| Type | Grams per US cup | What changes |
|---|---|---|
| All-purpose flour | 120 g | The reference on this page, spooned and levelled. |
| Bread flour | 120 g | Higher protein, but it fills a cup at much the same weight. |
| Cake flour | 114 g | Finer and lighter; a cup holds noticeably less. |
| Whole wheat flour | 113 g | Coarser particles leave more air between them. |
| Self-rising flour | 113 g | Contains leavening and salt already. |
| Almond flour | 96 g | The lightest common substitute by a wide margin. |
Substituting cup for cup between these is where recipes quietly go wrong. Two cups of cake flour weigh about 12 grams less than two cups of all-purpose. Match the weight, not the cup count.
Comparison figures are typical published US baking references. Only the all-purpose flour value above is part of this site's sourced dataset.
Flour is full of small air spaces. The weight that fits into a cup changes with the flour type and the way it is handled. This guide uses all-purpose flour as the default and labels that assumption beside every answer.
The converter does not assume that every cup weighs 237 or 250 grams. It uses the documented value for the exact ingredient and state selected.
If a product label or recipe publisher supplies a different gram weight for one cup, follow that recipe-specific value for the closest match to the original testing.
If you check a second flour converter you will probably find 125 grams per cup instead of the 120 grams used here. Neither figure is a mistake. They come from different sources measuring the same thing in slightly different ways.
120 g is King Arthur Baking's tested figure. King Arthur is the largest flour miller in the United States and measures with a specific method: fluff the flour, spoon it into the cup, level the top. That is the value this site uses, and the method is stated on every flour answer.
125 g is the more common figure elsewhere, used by Inch Calculator, TheCalculatorSite and several large converter sites. It sits closer to what a cup weighs when filled slightly more firmly than the spoon-and-level method produces.
The gap between them is 5 grams, about 4%. Set that against the real variable and it is small: the same cup of flour ranges from roughly 106 g sifted to 150 g scooped straight from the bag. The measuring method moves the answer eight times further than the choice of reference figure does.
| Amount | Cups at 120 g | Cups at 125 g | Difference |
|---|---|---|---|
| 100 g of flour | 0.83 cups | 0.80 cups | 0.03 cups |
| 250 g of flour | 2.08 cups | 2.00 cups | 0.08 cups |
| 500 g of flour | 4.17 cups | 4.00 cups | 0.17 cups |
| 1000 g of flour | 8.33 cups | 8.00 cups | 0.33 cups |
A side-by-side of what each major converter publishes is on the source comparison page. Use whichever figure matches the recipe you are following. If the recipe comes from King Arthur or a source that cites it, 120 g is the closer match. If it comes from a general US converter, 125 g may be. For anything where the difference would matter, weigh the flour instead of converting it.
Method and source
How this conversion was checked
This page uses 120 grams per US cup for unsifted, fluffed, spooned and leveled. Do not pack flour into the cup.
Primary reference: King Arthur Baking Ingredient Weight Chart
Cup standard: NIST US customary cup reference
How many grams are in one cup of flour?
One US cup of unsifted, fluffed, spooned and leveled uses a working reference of 120 grams on GramstoCup.co.
How many cups is 100 grams of flour?
100 grams of unsifted, fluffed, spooned and leveled is 0.83 US cups.
How many grams is half a cup of flour?
Half a US cup is approximately 60 grams using the 120 gram full-cup reference.
Can the result vary by brand or method?
Yes. Do not pack flour into the cup. Use the original recipe weight when precision is important.
Are these US cups or metric cups?
The results use a US customary cup. A metric cup is 250 milliliters and can produce a different answer.
Flour Conversions by Amount
Open the exact flour conversion page for your recipe weight.
50 Grams of Flour0.42 US cups100 Grams of Flour0.83 US cups125 Grams of Flour1.04 US cups150 Grams of Flour1.25 US cups200 Grams of Flour1.67 US cups250 Grams of Flour2.08 US cups300 Grams of Flour2.5 US cups400 Grams of Flour3.33 US cups500 Grams of Flour4.17 US cups750 Grams of Flour6.25 US cups1000 Grams of Flour8.33 US cups
Other Ingredient Guides
Each guide uses its own grams-per-cup standard.