Water (Pure / Filtered) Cups to Grams Converter
One US cup of Water (Pure / Filtered) weighs 237 grams. Half a cup weighs 119g and a quarter cup weighs 59g. Measure in a liquid measuring cup on a flat surface at eye level.
Water (Pure / Filtered) Cups to Grams Converter
Convert volumetric recipe cups of water (pure / filtered) into exact kitchen scale weight in grams.
Custom package weights override standard database densities for this session without altering official database records.
Cups of Water (Pure / Filtered) to Grams Conversion Table
Complete volume to weight chart converting recipe cups of water (pure / filtered) into grams across major international cup standards, fluid ounces, and tablespoons.
| Cup Portion | US Customary (g) | US Legal (g) | Metric Cup (g) | Imperial Cup (g) | Ounces (oz) | Tablespoons |
|---|---|---|---|---|---|---|
| ¼ cup | 59g | 60g | 63g | 71g | 2.09 oz | 4.0 tbsp |
| ⅓ cup | 79g | 80g | 83g | 95g | 2.79 oz | 5.3 tbsp |
| ½ cup | 119g | 120g | 125g | 142g | 4.18 oz | 8.0 tbsp |
| ⅔ cup | 158g | 160g | 167g | 190g | 5.57 oz | 10.7 tbsp |
| ¾ cup | 178g | 180g | 188g | 213g | 6.27 oz | 12.0 tbsp |
| 1 cup | 237g | 240g | 250g | 285g | 8.36 oz | 16.0 tbsp |
| 1¼ cups | 296g | 301g | 313g | 356g | 10.45 oz | 20.0 tbsp |
| 1½ cups | 356g | 361g | 376g | 427g | 12.54 oz | 24.0 tbsp |
| 1¾ cups | 415g | 421g | 438g | 498g | 14.63 oz | 28.0 tbsp |
| 2 cups | 474g | 481g | 501g | 569g | 16.72 oz | 32.0 tbsp |
| 2½ cups | 593g | 601g | 626g | 712g | 20.90 oz | 40.0 tbsp |
| 3 cups | 711g | 721g | 751g | 854g | 25.08 oz | 48.0 tbsp |
| 3½ cups | 830g | 841g | 877g | 996g | 29.26 oz | 56.0 tbsp |
| 4 cups | 948g | 962g | 1002g | 1139g | 33.44 oz | 64.0 tbsp |
Why Your Cup of Water (Pure / Filtered) Might Weigh Differently
Understanding key volumetric variables prevents measuring errors when converting recipes to scale weights in grams.
Compaction & Particle Headspace
Scooping water (pure / filtered) directly compresses air voids between granules, cramming up to 15 percent extra mass into the same cup volume.
Regional Cup Standard Variance
A US Customary cup holds 236.59ml (237g), a US Legal cup holds 240ml (240g), and a Metric cup holds 250ml (250g). Misidentifying cup capacity alters recipe scale mass by up to 6 percent.
Atmospheric Moisture & Settling
Granular particles of water (pure / filtered) absorb ambient humidity during storage, increasing bulk density and scale readout per cup portion.
Frequently Asked Questions: Cups of Water (Pure / Filtered) to Grams
Targeted answers for converting cup volumes of water (pure / filtered) into scale mass in grams.
How many grams is 1/2 cup of Water (Pure / Filtered)?
Half a US customary cup of Water (Pure / Filtered) weighs exactly 119 grams. In comparison, 1/2 Metric cup (125ml) weighs 125 grams, while 1/2 UK Imperial cup weighs 143 grams.
How many grams is 1/4 cup of Water (Pure / Filtered)?
One-quarter US customary cup of Water (Pure / Filtered) weighs 59 grams. This equals 4 US tablespoons or 4 fluid drams.
How do I convert cups of Water (Pure / Filtered) to grams for baking?
To convert cups of Water (Pure / Filtered) to grams, multiply the number of cups by 237. For example, 1.5 cups equals 356 grams, and 2 cups equals 474 grams on a kitchen scale.
Why does 1 cup of Water (Pure / Filtered) weigh differently depending on technique?
Volumetric measuring cups measure space rather than weight. Particle compaction and air pockets can alter Water (Pure / Filtered) cup weight by 5 to 15 percent.
How many grams is 1 Metric cup of Water (Pure / Filtered) versus a US cup?
One Metric cup (250ml) of Water (Pure / Filtered) weighs 250 grams, 1 US Legal cup (240ml) weighs 240 grams, and 1 US Customary cup (236.59ml) weighs 237 grams.
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Density data sourced from USDA FoodData Central. Verified by the Grams to Cups Editorial Team on 2026-08-20.