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How many grams is 1 cup of water?

Answer

237 g

1 cup of water is about 237 grams, or 8.4 ounces. That works out from USDA's figure of roughly 237 g for a full US cup (236.6 mL).

1 mL of water weighs very close to 1 g, which is why a cup of water is about 237 g.

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Water: cups and spoons to grams

VolumeGramsOunces
¼ cup59 g2.1 oz
⅓ cup79 g2.8 oz
½ cup119 g4.2 oz
⅔ cup158 g5.6 oz
¾ cup178 g6.3 oz
1 cup237 g8.4 oz
2 cups474 g16.7 oz
1 tablespoon15 g0.52 oz

Source: USDA FoodData Central #173647, Beverages, water, tap, drinking. USDA lists 1 serving 8 fl oz = 237 g. Weights are approximate.

Measuring tip

Liquids are the easiest thing to measure by volume, so cups and a scale will agree closely. Dairy weighs a little more or less than water depending on its fat, sugar and air content.

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