All-Purpose Flour: Cups to Grams
Quick answer: One US cup of all-purpose flour weighs about 125 grams (4.4 oz), and one tablespoon about 8 g.
US recipes measure all-purpose flour in cups; the rest of the world weighs it. Convert any amount in either direction — and measure it the way the chart assumes: spoon it into the cup and level — scooping packs in up to 20% more.
All-Purpose Flour conversion chart
| Cups | Grams | Ounces |
|---|
| ¼ cup | 31 g | 1.1 oz |
| ⅓ cup | 42 g | 1.5 oz |
| ½ cup | 63 g | 2.2 oz |
| ⅔ cup | 83 g | 2.9 oz |
| ¾ cup | 94 g | 3.3 oz |
| 1 cup | 125 g | 4.4 oz |
| 1½ cups | 188 g | 6.6 oz |
| 2 cups | 250 g | 8.8 oz |
How it works
Cups measure volume and grams measure weight, so the conversion runs through density: all-purpose flour packs about 125 g into a US cup (237 ml). Volume is only as accurate as your technique — spoon it into the cup and level — scooping packs in up to 20% more. That variability is exactly why serious baking recipes list grams, and why a $15 kitchen scale upgrades every bake. If your recipe uses metric cups (250 ml), the weights run about 5% higher.
Frequently asked
How many grams are in a cup of all-purpose flour?
About 125 grams (4.4 oz) per US cup, measured properly. A tablespoon is about 8 g.
How many cups is 250 g of all-purpose flour?
About 2 cups. Divide any gram amount by 125 to get cups — or flip the converter above to grams and it does it for you.
Does the type of flour change the weight?
A little. Bread flour runs ~127 g per cup, cake flour ~114 g, and whole wheat ~120 g. All-purpose at 125 g is the safe default when a recipe doesn't say.
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