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.
Water — all cup fractions in grams
| 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 |
| ¾ cups | 180 g | 6.3 oz |
| 1 cup | 240 g | 8.5 oz |
| 1½ cups | 360 g | 12.7 oz |
| 2 cups | 480 g | 16.9 oz |
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.