Convert cups of water to grams instantly. Enter a value below, or use the formula and reference table further down the page.
In practice
Water is the reference for the metric system: one millilitre weighs one gram, so a US cup (about 237 ml) weighs about 237 g on this page. It is the one common ingredient where volume converts to weight with no ingredient-specific adjustment, and it is why bakers weigh water for bread dough hydration. Temperature changes the weight only slightly, so you can ignore it in cooking. In other countries, a cup is 250 ml, so a metric cup of water weighs 250 g.
How to convert cups of water to grams
Multiply the value by 236.5.
g = cup × 236.5Example: 10 cup = 2365 g.
Cups of Water to Grams conversion table
| Cups of Water (cup) | Grams (g) |
|---|---|
| 1 cup | 236.5 g |
| 2 cup | 473 g |
| 3 cup | 709.5 g |
| 4 cup | 946 g |
| 5 cup | 1182.5 g |
| 10 cup | 2365 g |
| 15 cup | 3547.5 g |
| 20 cup | 4730 g |
| 25 cup | 5912.5 g |
| 50 cup | 11825 g |
| 100 cup | 23650 g |
Frequently asked questions
How many grams is 1 cup of water?
1 cup of water equals 236.5 grams.
What is the formula to convert cup to g?
To convert cup to g, multiply the value by 236.5. The full formula is: g = cup × 236.5.
How do I convert grams back to cups of water?
Use the same calculator above and type your value into the grams field instead — it converts in both directions. Or use the reverse formula: cup = g ÷ 236.5.
Is the cup to g conversion exact?
The conversion factor used here (236.5) is the standard internationally defined value. Results on this page are rounded to four decimal places for readability.