1/2 Cup of Water in Grams
1/2 cup of water weighs 120 grams (about 4.2 oz), based on 240 g per US cup (1 US cup = 240 ml). That's the same as 8 tablespoons of water. When a recipe's outcome depends on accuracy — especially baking — weigh it instead of measuring by cup.
1/2 cup is the measure most kitchens reach for first. Double it for a full cup (240 g), halve it for 1/4 cup (60 g) — both are standard scoops, which is why recipes lean on this one.
How much is 1/2 cup of water?
| Grams | 120 g |
|---|---|
| Milliliters | 120 ml |
| Ounces (weight) | 4.2 oz |
| Tablespoons | 8 tbsp |
| Teaspoons | 24 tsp |
| Density used | 240 g per US cup |
No 1/2 cup measure? Use spoons
1/2 cup is exactly 8 tablespoons, which is 120 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 1/2 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 | ¼ cup | 60 g | 4 tablespoons |
| As written | ½ cup | 120 g | 8 tablespoons |
| Double | 1 cup | 240 g | 16 tablespoons |
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 |
| ¾ cups | 180 g | 6.3 oz |
Every cup fraction of water in grams — the full chart.
How to measure 1/2 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.
1/2 cup of other ingredients
- 1/2 cup all-purpose flour in grams — 60 g
- 1/2 cup granulated sugar in grams — 100 g
- 1/2 cup powdered sugar in grams — 60 g
- 1/2 cup brown sugar (packed) in grams — 107 g
- 1/2 cup honey in grams — 170 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.