Water to Cups
Water weighs approximately 236 grams per US customary cup. Use the calculator below to convert any amount of water between grams and cups.
About Water
Water is the universal reference liquid for volume. One US cup of water weighs about 236 grams, which matches the legal US cup of 236.6 milliliters almost exactly.
Whether you are scaling a recipe up, substituting an ingredient, or converting a recipe from metric to US measurements, having an accurate grams-per-cup value for water removes the guesswork from your cooking. Bookmark this page for quick reference whenever water appears in a recipe.
How much does a cup of water weigh?
A standard US cup of water weighs about 236 grams (8.32 ounces). That makes it about 2.0 times heavier than a cup of all-purpose flour, and heavier than a cup of granulated sugar (200 g). This is why a converter that uses the same factor for every ingredient will give wrong answers: water has its own density, and recipes depend on it.
Weight of common water measures
| Measure | Grams | Ounces |
|---|---|---|
| 1 teaspoon of water | 4.9 g | 0.17 oz |
| 1 tablespoon of water | 14.8 g | 0.52 oz |
| 1/4 cup of water | 59 g | 2.08 oz |
| 1/3 cup of water | 78.7 g | 2.77 oz |
| 1/2 cup of water | 118 g | 4.16 oz |
| 2/3 cup of water | 157.3 g | 5.55 oz |
| 3/4 cup of water | 177 g | 6.24 oz |
| 1 cup of water | 236 g | 8.32 oz |
| 2 cups of water | 472 g | 16.65 oz |
Values are reference weights for level, unpacked measures unless the ingredient is normally packed. Brand, moisture, temperature and how firmly you fill the cup can shift the result by a few percent, so for precision baking weigh water on a kitchen scale and use the cup figure only as a guide. To understand why these numbers differ between ingredients, read our guide on why a cup of flour is not a cup of sugar, or see why weighing beats measuring cups.
Water Conversion Table
| Grams | Cups | Ounces |
|---|---|---|
| 25 g | 0.11 cups | 0.88 oz |
| 50 g | 0.21 cups | 1.76 oz |
| 75 g | 0.32 cups | 2.65 oz |
| 100 g | 0.42 cups | 3.53 oz |
| 125 g | 0.53 cups | 4.41 oz |
| 150 g | 0.64 cups | 5.29 oz |
| 175 g | 0.74 cups | 6.17 oz |
| 200 g | 0.85 cups | 7.05 oz |
| 225 g | 0.95 cups | 7.94 oz |
| 250 g | 1.06 cups | 8.82 oz |
| 300 g | 1.27 cups | 10.58 oz |
| 400 g | 1.69 cups | 14.11 oz |
| 500 g | 2.12 cups | 17.64 oz |
Frequently Asked Questions
- help_outlineHow many cups is 100 grams of water?
100 grams of water is approximately 0.4237 cups, based on the standard reference of 236 grams per US cup.
- help_outlineHow many grams is 1 cup of water?
1 US cup of water weighs approximately 236 grams. Always level off the cup for the most accurate result.
- help_outlineIs the water cups conversion accurate for all brands?
The 236 g/cup value is a widely accepted average. Small variations can occur between brands and depending on how firmly the ingredient is packed.