1/3 Cup of Flour in Grams
1/3 cup of all-purpose flour weighs 40 grams (about 1.4 oz), based on 120 g per US cup (spoon-and-level method). That's the same as 5.3 tablespoons of all-purpose flour. When a recipe's outcome depends on accuracy — especially baking — weigh it instead of measuring by cup.
1/3 cup is the awkward fraction: it does not divide into whole tablespoons, and halving it lands on 2 tablespoons + 2 teaspoons. Two scoops make 2/3 cup (80 g), three make a full cup (120 g).
How much is 1/3 cup of all-purpose flour?
| Grams | 40 g |
|---|---|
| Ounces (weight) | 1.4 oz |
| Tablespoons | 5.3 tbsp |
| Teaspoons | 16 tsp |
| Density used | 120 g per US cup |
No 1/3 cup measure? Use spoons
1/3 cup is exactly 5 tablespoons + 1 teaspoon, which is 40 g of all-purpose flour. Measuring spoons are stamped to a tighter tolerance than cups, so for small amounts the spoon route is usually the more accurate one even when you do own the cup.
Halving and doubling 1/3 cup
Scaling a recipe is the usual reason this conversion comes up, and grams scale cleanly where cup fractions do not:
| Recipe | Cups | Grams | Spoons |
|---|---|---|---|
| Half | ⅛ cup | 20 g | 2 tablespoons + 2 teaspoons |
| As written | ⅓ cup | 40 g | 5 tablespoons + 1 teaspoon |
| Double | ⅔ cup | 80 g | 10 tablespoons + 2 teaspoons |
Nearby amounts
| Cups | Grams | Ounces |
|---|---|---|
| ¼ cups | 30 g | 1.1 oz |
| ⅓ cups | 40 g | 1.4 oz |
| ½ cups | 60 g | 2.1 oz |
| ⅔ cups | 80 g | 2.8 oz |
Every cup fraction of flour in grams — the full chart.
How to measure 1/3 cup of all-purpose flour
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.
1/3 cup of other ingredients
- 1/3 cup granulated sugar in grams — 67 g
- 1/3 cup powdered sugar in grams — 40 g
- 1/3 cup brown sugar (packed) in grams — 71 g
- 1/3 cup honey in grams — 113 g
- 1/3 cup butter in grams — 76 g
Convert another amount
250 cups All-purpose flour = 30000 g
Based on 120 g per US cup.
Reverse conversion: grams of flour to cups.
Density 120 g/cup — sources: King Arthur Baking ingredient weight chart, USDA FoodData Central. Data verified 2026-08-20. Methodology.