How many grams is 1 cup of water?

1 cup of water weighs about 240 g.

Is the cup-to-gram value the same for every brand?

It is close, but density varies slightly with brand, humidity and how tightly you pack it. Weigh on a scale when accuracy matters.

Cups of water to grams

Answer

1 cup of water = 240 g

Convert any amount

Amount cup = – gram

Conversion table

Cups	Grams
0.25 cups	60 g
0.5 cups	120 g
0.75 cups	180 g
1 cup	240 g
1.5 cups	360 g
2 cups	480 g
3 cups	720 g
4 cups	960 g

Based on the US customary cup of 240 ml. A metric cup (250 ml) is about 4% larger.

Handy tools for this

Digital kitchen scale The most accurate way to bake — skip the cup guesswork and weigh straight into the bowl to the nearest gram. Check price → Measuring cups set A sturdy nested set of US cups for recipes written in cups. Cheap, dishwasher-safe and built to last. Check price → Measuring spoons Tablespoon and teaspoon set for small, precise amounts of baking powder, salt and spices. Check price →

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How to measure

Water is the reference point: 1 millilitre weighs exactly 1 gram, so 1 dl = 100 g and 1 litre = 1 kg.

Frequently asked questions

How many grams is 1 cup of water?: 1 cup of water weighs about 240 g.
Is the cup-to-gram value the same for every brand?: It is close, but density varies slightly with brand, humidity and how tightly you pack it. Weigh on a scale when accuracy matters.

Related conversions

Values are approximate — ingredient density varies with brand, humidity and how you measure. For baking, weighing on a scale is always the most reliable method.