1/3 Cup of Water in Grams
1/3 cup of water weighs 80 grams (about 2.8 oz), based on 240 g per US cup (1 US cup = 240 ml). That's the same as 5.3 tablespoons of water. 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 (160 g), three make a full cup (240 g).
How much is 1/3 cup of water?
| Grams | 80 g |
|---|---|
| Milliliters | 80 ml |
| Ounces (weight) | 2.8 oz |
| Tablespoons | 5.3 tbsp |
| Teaspoons | 16 tsp |
| Density used | 240 g per US cup |
No 1/3 cup measure? Use spoons
1/3 cup is exactly 5 tablespoons + 1 teaspoon, which is 80 g of water. 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 | 40 g | 2 tablespoons + 2 teaspoons |
| As written | ⅓ cup | 80 g | 5 tablespoons + 1 teaspoon |
| Double | ⅔ cup | 160 g | 10 tablespoons + 2 teaspoons |
Nearby amounts
| Cups | Grams | Ounces |
|---|---|---|
| ¼ cups | 60 g | 2.1 oz |
| ⅓ cups | 80 g | 2.8 oz |
| ½ cups | 120 g | 4.2 oz |
| ⅔ cups | 160 g | 5.6 oz |
Every cup fraction of water in grams — the full chart.
How to measure 1/3 cup of water
Water is the reference ingredient: 1 US cup (240 ml) weighs 240 g, so grams and milliliters are interchangeable. Any liquid measuring cup works; read at eye level.
1/3 cup of other ingredients
- 1/3 cup all-purpose flour in grams — 40 g
- 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
Convert another amount
250 cups Water = 60000 g
Based on 240 g per US cup.
Reverse conversion: grams of water to cups.
Density 240 g/cup — sources: density (1.00 g/ml), USDA FoodData Central. Data verified 2026-08-20. Methodology.