How Many Grams in a Cup of All-Purpose Flour?
1 cup all-purpose flour = 120 g4.2 oz · spooned & leveled · ½ cup = 60 g · 1 tbsp = 7.5 g
Reference values Being verified with kitchen scale tests. Current figures follow the King Arthur Baking ingredient weight chart.
On this page: Chart, ⅛ to 4 cups · Grams to cups · Measuring tips
All-Purpose Flour cups to grams
120 g
1 cup all-purpose flour (spooned & leveled) ≈ 4.2 oz
Reference values Being verified with kitchen scale tests. Current figures follow the King Arthur Baking ingredient weight chart.
Why all-purpose flour has its own cups-to-grams number
Flour is the ingredient where cup measurements drift the most, because it packs down. A cup scooped straight from the bag holds more flour than a cup that was spooned in and leveled, and that extra flour is a common reason cookies come out dry or cakes dense. The number on this page is for the spoon-and-level method most American recipes assume.
All-Purpose Flour cups to grams chart
US cups and spoons, spooned & leveled. Grams are rounded to the nearest gram (0.1 g under 10 g).
| US measure | Grams | Ounces |
|---|---|---|
| 1 teaspoon | 2.5 g | 0.09 oz |
| 1 tablespoon | 7.5 g | 0.26 oz |
| ⅛ cup (2 tbsp) | 15 g | 0.53 oz |
| ¼ cup | 30 g | 1.06 oz |
| ⅓ cup | 40 g | 1.41 oz |
| ½ cup | 60 g | 2.12 oz |
| ⅔ cup | 80 g | 2.82 oz |
| ¾ cup | 90 g | 3.17 oz |
| 1 cup | 120 g | 4.23 oz |
| 1½ cups | 180 g | 6.35 oz |
| 2 cups | 240 g | 8.47 oz |
| 3 cups | 360 g | 12.7 oz |
| 4 cups | 480 g | 16.9 oz |
| Grams | US measures | Decimal cups |
|---|---|---|
| 50 g | ¼ cup + 2 tbsp + 2 tsp | 0.42 cups |
| 100 g | ¾ cup + 1 tbsp + 1 tsp | 0.83 cups |
| 250 g | 2 cups + 1 tbsp + 1 tsp | 2.08 cups |
| 500 g | 4 cups + 2 tbsp + 2 tsp | 4.17 cups |
“≈” means the amount is rounded to the nearest ⅛ teaspoon you can measure.
How to measure all-purpose flour for this conversion
- Stir or fluff the flour in its bag or canister first; flour settles in storage.
- Spoon it into a dry measuring cup until it mounds over the rim, then sweep the top level with the back of a knife.
- Don’t tap the cup or press the flour down. Both pack it and add weight.
- If a recipe says “1 cup sifted flour,” sift first and then measure. “1 cup flour, sifted” means measure first, then sift.
- Different brands can land a few grams apart per cup. A kitchen scale removes the guesswork entirely.
Whole wheat flour is lighter per cup in the reference chart, so don’t reuse this number for it — pick it in the converter instead.
Source: King Arthur Baking Ingredient Weight Chart (reference value, not yet scale-tested by Measure Pantry).