Skip to content

How many grams in a cup of water?

The short answer first, then a table for every common measure and how to fill your cup so the numbers match.

Quick answer

1 US cup of water weighs about

237 g

Metric cup (250 mL)250 g

1 tablespoon14.8 g

1 teaspoon4.9 g

Cups of water to grams

Cups	US cup	Metric cup
¼ cup	59 g	63 g
⅓ cup	79 g	83 g
½ cup	119 g	125 g
⅔ cup	158 g	167 g
¾ cup	178 g	188 g
1 cup	237 g	250 g
2 cups	474 g	501 g

Grams of water to cups

100 g0.422 cup

250 g1.05 cups

500 g2 ⅛ cups

US cups.

Measure it right

1Use a liquid cupA clear jug with lines is more accurate than a dry cup.
2Set it flatPut it on the counter, not in your hand.
3Read at eye levelBend down and read the line at eye level.

Nutrition

Per	Calories	Protein	Carbs	Fat
1 US cup	0	0 g	0 g	0 g
100 g	0	0 g	0 g	0 g

See calories and macros →

Common questions

Which cup size does my recipe use?

US recipes use 236.6 mL. Many Arab, UK and Australian recipes use a 250 mL metric cup, which holds about 250 g of water.

Is it better to weigh water?

Yes. A cup can hold more or less depending on how you fill it. A kitchen scale gives the same result every time.

Source: USDA FoodData Central, SR Legacy #174158 (1 cup = 237 g). Values are approximate.