400 Grams of Flour to Cups
400 grams of all-purpose flour equals 3 ⅓ cups (3.33 US cups), based on 120 g per cup (spoon-and-level method). In the kitchen, measure 3 cups + 5 tbsp. For best results, weigh all-purpose flour with a scale — cup measurements vary with how the cup is filled.
| US cups | 3 ⅓ cups (3.33 cups) |
|---|---|
| Measured as | 3 cups + 5 tbsp |
| Ounces (weight) | 14.1 oz |
| Density used | 120 g per US cup |
Seeing a different answer elsewhere? Sources disagree on flour: King Arthur's spoon-and-level standard is 120 g per cup (our number, giving 3 ⅓ cups), while USDA-based tables use 125 g (giving 3 ¼ cups, 3.2 cups). Both are correct for their measuring method — see how we measure.
How to measure 400 g of all-purpose flour without a scale
Spoon flour into the cup with a spoon, then level the top with a straight edge — never scoop the cup into the bag. Scooping compresses flour and can pack in 20–30% more (140 g+ instead of 120 g), which is the single most common reason baked goods turn out dry. Sifted flour runs lighter still, about 110 g per cup.
Nearby amounts
| Grams | Cups | Decimal |
|---|---|---|
| 350 g | 2 ⅞ cups | 2.92 |
| 375 g | 3 ⅛ cups | 3.13 |
| 450 g | 3 ¾ cups | 3.75 |
| 500 g | 4 ⅛ cups | 4.17 |
400 grams of other ingredients
The same weight fills a very different cup depending on density — that's why "grams to cups" always needs the ingredient:
- 400 g of granulated sugar to cups — 2 cups
- 400 g of powdered sugar to cups — 3 ⅓ cups
- 400 g of brown sugar (packed) to cups — 1 ⅞ cups
- 400 g of honey to cups — 1 ⅛ cups
- 400 g of butter to cups — 1 ¾ cups
Convert another amount
250 g All-purpose flour = 2 ⅛ cups
Exactly 2.08 cups — or measure 2 cups + 1 tbsp.
More flour conversions: the full grams-to-cups flour chart
Density 120 g/cup — sources: King Arthur Baking ingredient weight chart, USDA FoodData Central. Data verified 2026-08-20. Methodology.