Conversion Table: All-Purpose Flour Cups to Grams
| Volume | Grams | Ounces |
|---|---|---|
| 1 tsp | 2.5 g | 0.09 oz |
| 1 tbsp | 7.5 g | 0.26 oz |
| ⅛ cup | 15.0 g | 0.53 oz |
| ¼ cup | 30.0 g | 1.06 oz |
| ⅓ cup | 40.0 g | 1.41 oz |
| ½ cup | 60.0 g | 2.12 oz |
| ⅔ cup | 80.0 g | 2.82 oz |
| ¾ cup | 90.0 g | 3.17 oz |
| 1 cup | 120.0 g | 4.23 oz |
| 2 cups | 240.0 g | 8.47 oz |
| 4 cups | 480.0 g | 16.93 oz |
How to Measure All-Purpose Flour
Use the spoon-and-level method: spoon flour into the measuring cup with a separate spoon, then sweep a straight edge across the top. Scooping directly can add 25–30% more weight.
For the most consistent results, use a kitchen scale. A cup measurement can vary by 15–30% depending on technique. Weighing eliminates that variable entirely.
Why the Gram Weight Varies by Ingredient
A cup is a measure of volume — how much space something occupies. All-Purpose Flour has a specific density (mass per unit volume) that determines how many grams fit in that space. The 120 g/cup value above is calibrated for the measuring method described (spoon and level where applicable).
Different ingredients have very different densities. Compare: water (237 g/cup), honey (340 g/cup), cake flour (96 g/cup). Using a single generic "cups to grams" ratio doesn't work — the ingredient must be specified.
Quick Converter
For more conversions, use our full cups to grams calculator which covers 89+ ingredients.
Frequently Asked Questions
How many grams is ½ cup of All-Purpose Flour?
60.0 grams (2.12 oz).
How many grams is ¼ cup of All-Purpose Flour?
30.0 grams (1.06 oz).
Is this weight for sifted or unsifted All-Purpose Flour?
These weights use the spoon-and-level method (not sifted, not scooped). Sifted All-Purpose Flour will be lighter; scooped will be heavier.
Where does this weight come from?
Source: King Arthur Baking. See our methodology page for how we source and verify ingredient weights.