1 Cup of Flour in Grams
125 g in a US cup — and what that figure assumes
1 cup of all-purpose flour weighs 125 grams, measured in a US cup.
That figure comes from one number: a full US cup of all-purpose flour is 125 g. Everything else on this page is that number scaled.
Spoon the flour into the cup and sweep it level with a knife. Dragging the cup through the bag compacts it, and that cup weighs 140–150 g instead of 125 g — up to 20% more flour than the recipe wanted.
Whose cup you mean changes the answer. A 250 ml metric cup — the standard in the UK, Australia, New Zealand and Canada — is 5.7% larger than the 236.6 ml US cup, so one cup of all-purpose flour is 132 g there rather than 125 g.
125 g, 120 g or 150 g? It depends on how the cup was filled
Search "1 cup of flour in grams" and you will see 120 g, 125 g, 128 g and even 140 g. None of them is a typo. A cup measures space, and flour is compressible: the same cup holds more when the flour is packed.
USDA FoodData Central lists 125 g for a cup of all-purpose flour. King Arthur Baking, which fluffs the flour and sprinkles it into the cup, publishes 120 g. Scooping the cup straight through a settled bag typically gives 140–150 g. This site uses 125 g.
If your recipe comes from King Arthur or another source that publishes its own weight chart, use their figure. Otherwise 125 g is the safe middle, and far closer to what the recipe developer meant than a scooped cup.
Other flours by the cup
Bread flour is about 130 g, cake flour 120 g spooned (about 100 g sifted), whole wheat 120 g, almond flour 96 g and coconut flour 128 g. Each has its own page with the full table.
Where the 125 g figure comes from
- USDA FoodData Central: 1 cup of “Wheat flour, white, all-purpose, enriched, bleached” = 125 g (FDC ID 168894)
- King Arthur Baking ingredient weight chart: All-Purpose Flour, 1 cup = 120 g (chart)
This site uses 125 g per US cup of all-purpose flour, spooned and levelled. References checked September 2026.
1 cup of flour in each cup standard
| Cup standard | Size | Grams | Ounces |
|---|---|---|---|
| US customary | 236.6 ml | 125 g | 4.41 oz |
| Metric (UK, AU, NZ, CA) | 250 ml | 132 g | 4.66 oz |
| Imperial (older UK) | 284 ml | 150 g | 5.30 oz |
A recipe that just says "cups" is almost always American. If yours came from a British, Australian or New Zealand source, take the metric row — on a 125 g measure the gap is 7.1 g.
Halving and doubling flour
Recipes get scaled more often than they get followed exactly. These are the portions of all-purpose flour a cook actually reaches for, already weighed out.
| Cups | Grams | Ounces | Tablespoons |
|---|---|---|---|
| ⅛ cup | 15.6 g | 0.55 oz | 2 |
| ¼ cup | 31.3 g | 1.10 oz | 4 |
| ⅓ cup | 41.7 g | 1.47 oz | 5.33 |
| ½ cup | 62.5 g | 2.20 oz | 8 |
| ⅔ cup | 83.3 g | 2.94 oz | 10.67 |
| ¾ cup | 93.8 g | 3.31 oz | 12 |
| 1 cup | 125 g | 4.41 oz | 16 |
| 1¼ cups | 156 g | 5.51 oz | 20 |
| 1½ cups | 188 g | 6.61 oz | 24 |
| 1¾ cups | 219 g | 7.72 oz | 28 |
| 2 cups | 250 g | 8.82 oz | 32 |
| 2¼ cups | 281 g | 9.92 oz | 36 |
| 2½ cups | 313 g | 11.02 oz | 40 |
| 3 cups | 375 g | 13.23 oz | 48 |
| 4 cups | 500 g | 17.64 oz | 64 |
| 5 cups | 625 g | 22.05 oz | 80 |
| 6 cups | 750 g | 26.46 oz | 96 |
1 cup of flour in other units
| Unit | Amount |
|---|---|
| Grams | 125 g |
| Ounces (weight) | 4.41 oz |
| Pounds | 0.276 lb |
| Tablespoons | 16 |
| Teaspoons | 48 |
| Millilitres (the space it fills) | 237 ml |
This is plain all-purpose flour. Bread flour packs slightly heavier at 130 g per cup and cake flour is lighter at 120 g (about 100 g sifted), so a recipe written for one is not a straight swap by volume.
1 cup of something else
The same cup holds a different weight of everything, because ingredients do not weigh the same for their size.
| Ingredient | Grams per US cup | 1 cup weighs |
|---|---|---|
| Sugar | 200 g | 200 g |
| Butter | 227 g | 227 g |
| Milk | 244 g | 244 g |
Frequently asked questions
How many grams is 1 cup of flour?
1 cup of all-purpose flour is 125 grams in a US cup, based on 125 g per full cup. In a 250 ml metric cup it is 132 g.
Is that weighed or measured?
Measured, then weighed on a scale. Spoon the flour into the cup and sweep it level with a knife. Dragging the cup through the bag compacts it, and that cup weighs 140–150 g instead of 125 g — up to 20% more flour than the recipe wanted. A scale skips the question, which is why recipes that care about the result give grams.
How many tablespoons is 1 cup of flour?
16 tablespoons, or 48 teaspoons — 7.81 g per tablespoon for all-purpose flour.
How many ounces is 1 cup of flour?
4.41 ounces by weight. That is not the same as fluid ounces — 1 cup is 8 US fluid ounces of space, whatever is filling it.
Why do different sites give different grams for 1 cup of flour?
Because a cup is a volume and the weight depends on how it was filled, and on whose cup. This site uses 125 g per US cup. This is plain all-purpose flour. Bread flour packs slightly heavier at 130 g per cup and cake flour is lighter at 120 g (about 100 g sifted), so a recipe written for one is not a straight swap by volume.