Grams of Water to Cups
One US cup of water weighs 240 grams. To convert grams of water to cups, divide the grams by 240 — so 100 g is ⅜ cup and 240 g is exactly 1 cup.
250 g Water = 1 cup
Exactly 1.04 cups — or measure 1 cup + 1 tbsp.
Water cups-to-grams chart
| 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 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.
Grams of water to cups — every amount
- 50 g to cups — ¼ cup
- 100 g to cups — ⅜ cup
- 125 g to cups — ½ cup
- 150 g to cups — ⅝ cup
- 200 g to cups — ⅞ cup
- 250 g to cups — 1 cup
- 300 g to cups — 1 ¼ cups
- 400 g to cups — 1 ⅔ cups
- 500 g to cups — 2 ⅛ cups
Other ingredients
- Grams of flour to cups
- Grams of sugar to cups
- Grams of powdered sugar to cups
- Grams of brown sugar to cups
- Grams of honey to cups
- Grams of butter to cups
- Grams of milk to cups
- Grams of rice to cups
- Grams of oats to cups
- Grams of chocolate chips to cups
- Grams of cocoa powder to cups
Density 240 g/cup — sources: density (1.00 g/ml), USDA FoodData Central. Data verified 2026-08-20. Methodology.