Quick Answer
1 US cup of water is about 237 grams.
That means 1/2 cup is about 118 grams, 1/4 cup is about 59 grams, and 2 cups is about 474 grams.
Water is the standard density reference. One US cup of water weighs approximately 237 grams.
How to Convert Water Cups to Grams
To convert cups to grams, multiply the cup amount by the grams-per-cup reference for the ingredient. On this page, the working reference is about 237 grams per US cup.
This is helpful for rewriting cup-based recipes into weight-based prep notes, especially when you want better consistency from batch to batch.
Water Cups to Grams Table (US Cup)
| Cups | Grams |
|---|---|
| 0.25 | About 59 g |
| 0.5 | About 118 g |
| 0.75 | About 178 g |
| 1 | About 237 g |
| 1.5 | About 356 g |
| 2 | About 474 g |
| 2.5 | About 592 g |
| 3 | About 711 g |
| 4 | About 948 g |
When to Use This Page
This page is useful when a recipe gives water in cups but you want to weigh it for more accurate measuring, easier scaling, or faster repeat prep.
It is especially helpful in baking, where small differences in cup filling can change the final result.
Water Conversion FAQs
How many grams is 1 cup of Water?
A practical US cup reference for Water is about 237 grams.
Why can cup-to-gram values vary for water?
Water is the standard density reference. One US cup of water weighs approximately 237 grams.
Should I switch water recipes to grams?
If you want more consistent results or easier scaling, converting water into grams is usually worth it.
Need Another Ingredient or Cup Standard?
Use the main cups-to-grams converter for other ingredients, cup standards, and custom values.