One cup of flour usually weighs 120 grams, but the exact number shifts with the flour type and how you scoop it. This guide gives you the exact gram weight for every cup size, so your baking turns out right every time.
How Many Grams in a Cup of Flour (Conversion Chart)
| Cups | Grams |
|---|---|
| 1/4 cup | 30g |
| 1/3 cup | 40g |
| 1/2 cup | 60g |
| 2/3 cup | 80g |
| 3/4 cup | 90g |
| 1 cup | 120g |
| 1.5 cups | 180g |
| 2 cups | 240g |
| 4 cups | 480g |
More Post: How Many Teaspoons in a Cup? (1/8 to 1 Cup Chart)
1/2 Cup Flour in Grams
| Flour Type | 1/2 Cup in Grams |
|---|---|
| All-Purpose Flour | 60g |
| Bread Flour | 60g–68g |
| Whole Wheat Flour | 57g |
| Cake Flour | 57g |
| Self-Rising Flour | 60g |
3 Cups Flour in Grams
| Flour Type | 3 Cups in Grams |
|---|---|
| All-Purpose Flour | 360g |
| Bread Flour | 381g–408g |
| Whole Wheat Flour | 339g |
| Cake Flour | 345g |
How to Measure Flour Correctly Using Cups
If you don’t own a kitchen scale, this method gets you closest to the true weight.
- Fluff the flour in the bag or bin with a fork
- Spoon the flour into the measuring cup, don’t scoop directly
- Level the top with the flat edge of a knife
- Never pack or shake the cup
Avoid using a liquid measuring cup for flour. Without a flat rim to level against, it produces the least accurate results of any method.
Common Things That Weigh 120 Grams

A visual comparison helps when you don’t have a scale handy. 120 grams, the standard weight of 1 cup of flour, matches a few familiar objects.
A Large Banana
A single large banana, peeled, weighs close to 120 grams. It’s a handy mental reference when you’re baking without a scale on the counter.
A Baseball
An official baseball weighs around 145 grams, just slightly heavier than a cup of flour. It’s a close enough comparison for a quick gut check.
A Stick and a Half of Butter
One stick of American butter weighs 113 grams, so a stick and a bit more lands you right around 120 grams, matching flour almost exactly.
A Medium Apple
A medium apple typically weighs between 150 and 180 grams, a touch heavier than flour but still useful as a rough visual anchor in the kitchen.
More Post: How Many Cups in Ounces? 5, 16, 24, 32 & 40 Oz
Conclusion
One cup of flour weighs 120 grams by the most common US standard, though the exact number shifts with flour type and scooping method. Use the charts above, or switch to a scale, and your measurements will stay consistent every time you bake.

I am the admin and author of Measur Cup, researching, verifying, and simplifying weight, length, and unit conversions to provide accurate, easy-to-understand measurement guides for everyday use.






