3 cups of all-purpose flour = 360 g (12.7 oz) using King Arthur's spoon-and-level weight. USDA's Food Buying Guide uses a heavier 125 g cup, which gives 375 g.
Updated · How we source our numbers
Different flours pack differently, so the same 3 cups weighs different amounts. All weights are from King Arthur's ingredient weight chart (spoon and level).
| Flour | 3 cups | Per cup |
|---|---|---|
| All-purpose flour | 360 g | 120 g |
| Bread flour | 360 g | 120 g |
| Cake flour (unbleached) | 360 g | 120 g |
| Pastry flour | 318 g | 106 g |
| Self-rising flour | 339 g | 113 g |
| Italian-style (00) pizza flour | 348 g | 116 g |
| Whole wheat flour | 339 g | 113 g |
| Whole wheat pastry flour | 288 g | 96 g |
| Medium rye flour | 318 g | 106 g |
| Spelt flour | 297 g | 99 g |
| Semolina flour | 489 g | 163 g |
| Gluten-free measure-for-measure flour | 360 g | 120 g |
| Almond flour | 288 g | 96 g |
| Coconut flour | 384 g | 128 g |
| Oat flour | 276 g | 92 g |
| White rice flour | 426 g | 142 g |
| Chickpea flour | 255 g | 85 g |
| Cups | King Arthur (120 g/cup) | USDA (125 g/cup) | Tablespoons |
|---|---|---|---|
| 1/4 cup | 30 g | ≈ 31.3 g | 4 tablespoons |
| 1/3 cup | 40 g | ≈ 41.7 g | 5 1/3 tablespoons |
| 1/2 cup | 60 g | ≈ 62.5 g | 8 tablespoons |
| 2/3 cup | 80 g | ≈ 83.3 g | 10 2/3 tablespoons |
| 3/4 cup | 90 g | ≈ 93.8 g | 12 tablespoons |
| 1 cup | 120 g | 125 g | 16 tablespoons |
| 1 1/4 cups | 150 g | ≈ 156.3 g | 20 tablespoons |
| 1 1/2 cups | 180 g | ≈ 187.5 g | 24 tablespoons |
| 2 cups | 240 g | 250 g | 32 tablespoons |
| 2 1/2 cups | 300 g | ≈ 312.5 g | 40 tablespoons |
| 3 cups | 360 g | 375 g | 48 tablespoons |
| 4 cups | 480 g | 500 g | 64 tablespoons |
Both figures assume the flour is spooned into the cup and levelled. Dipping the cup into the bag and scooping compacts the flour, so the same cup holds noticeably more — the most common reason bakes come out dry. The two official figures differ because King Arthur and USDA measured differently; neither is wrong. For results you can repeat, weigh your flour.
Sources: King Arthur Baking ingredient weight chart · USDA Food Buying Guide, grains conversions (enriched white flour, 125 g per cup).