One US cup of water weighs about 237 grams (8.35 oz). A tablespoon is about 15 g and a teaspoon about 4.9 g.
- 1 cup
- 237 gDerived: NIST US cup = 236
- 1 tablespoon
- 15 g1/16 cup
- 1 teaspoon
- 4.9 g1/48 cup
- 100 grams
- 0.423 cup6.76 tablespoons
Weights from USDA FoodData Central and King Arthur Baking. Checked .
Water cups to grams chart
| Cups | Grams | Ounces |
|---|---|---|
| 1/8 cup | 29.6 g | 1.04 oz |
| 1/4 cup | 59.1 g | 2.09 oz |
| 1/3 cup | 78.9 g | 2.78 oz |
| 1/2 cup | 118 g | 4.17 oz |
| 2/3 cup | 158 g | 5.56 oz |
| 3/4 cup | 177 g | 6.26 oz |
| 1 cup | 237 g | 8.35 oz |
| 1 1/2 cups | 355 g | 12.5 oz |
| 2 cups | 473 g | 16.7 oz |
| 3 cups | 710 g | 25 oz |
| 4 cups | 946 g | 33.4 oz |
Water grams to cups
| Grams | Cups | Tablespoons |
|---|---|---|
| 25 g | 0.106 cups | 1.69 tbsp |
| 50 g | 0.211 cups | 3.38 tbsp |
| 100 g | 0.423 cups | 6.76 tbsp |
| 125 g | 0.528 cups | 8.45 tbsp |
| 150 g | 0.634 cups ≈ 5/8 cup | 10.1 tbsp |
| 200 g | 0.845 cups | 13.5 tbsp |
| 250 g | 1.06 cups | 16.9 tbsp |
| 300 g | 1.27 cups | 20.3 tbsp |
| 400 g | 1.69 cups | 27 tbsp |
| 500 g | 2.11 cups ≈ 2 1/8 cup | 33.8 tbsp |
| 1000 g | 4.23 cups | 67.6 tbsp |
How we got 237 g
Derived: NIST US cup = 236.5882 mL x ~1.00 g/mL for water at kitchen temperature = ~236.6 g (often rounded to 237 g). Nutrition labels use a 240 mL cup (FDA) which would be ~240 g.
Density of water is ~1 g/mL; temperature effects are negligible for cooking.
Questions people ask
How many grams in a cup of water?
About 237 g in 1 cup of water.
How many cups is 100 grams of water?
About 0.423 cups (6.76 tablespoons).
How many grams is 1/2 cup of water?
About 118 grams.