1 Cup of Water in Grams

1 cup of water weighs about 237 grams (8.36 oz).

US cup (236.6 ml). Source: USDA FoodData Central.

Tablespoons
16 tbsp
Teaspoons
48 tsp
Milliliters
236.6 ml
Grams
237 g
Ounces (weight)
8.36 oz

Based on about 237 g per US cup of water. Real weights vary with brand and how the cup is filled.

Water: cups to grams chart

CupsGramsOuncesMilliliters
1/8 cup30 g1.04 oz30 ml
1/4 cup59 g2.09 oz59 ml
1/3 cup79 g2.79 oz79 ml
1/2 cup119 g4.18 oz118 ml
2/3 cup158 g5.57 oz158 ml
3/4 cup178 g6.27 oz177 ml
1 cup237 g8.36 oz237 ml
1 1/2 cups356 g12.5 oz355 ml
2 cups474 g16.7 oz473 ml
3 cups711 g25.1 oz710 ml
4 cups948 g33.4 oz946 ml

Water: grams to cups

Many recipes outside the US list weights. Divide the grams by 237 (the typical weight of one cup) to get cups. A tablespoon is 1/16 cup, about 15 g, and a teaspoon is 1/3 tablespoon, about 4.9 g.

GramsCups (decimal)Cups (nearest 1/8)Tablespoons
50 g0.2111/43.376
100 g0.4223/86.751
125 g0.5271/28.439
200 g0.8447/813.5
250 g1.055116.88
300 g1.2661 1/420.25
500 g2.112 1/833.76

How water compares with similar ingredients

Cup weights of nearby ingredients on this site, so you can see whether a swap changes the amount you weigh out. The last column is the difference from water per cup.

Ingredient1 cupDifference
water (this page)237 g—
yogurt245 g+8 g
sour cream230 g−7 g
cream cheese227 g−10 g
shredded cheddar cheese113 g−124 g

Measuring water by cup and by weight

A US cup of water weighs about 237 g, which is the same as 237 ml. This is the one place where grams and millilitres are interchangeable. Bread bakers use that to measure water by weight, and recipes written in grams often give water as an equal number of ml. Very warm or cold water changes the volume slightly, but the weight stays put.

Need a different ingredient? Browse all cups-to-grams conversions, or use the plain cooking converter and cups to ml converter for water-like liquids.

Helpful answers

Frequently asked questions

How many grams are in 1 cup of water?
About 237 g (8.36 oz). This is a typical value from the USDA FoodData Central; your own cup may differ by several grams depending on brand and how it is measured.
How many grams are in 1/2 cup of water?
About 119 g (4.18 oz). For 1/4 cup it is about 59 g, and for 1/3 cup about 79 g.
How many grams are in 1 tablespoon of water?
About 15 g, since a US cup holds 16 tablespoons. A teaspoon is roughly 4.9 g.
How many cups is 100 grams of water?
About 0.422 cup, using 237 g per cup. Written the way recipes do, 250 g is about 1 cups and 500 g is about 2 1/8 cups.
Is 1 cup of water heavier than 1 cup of yogurt?
No. At the typical values on this site, 1 cup of water is 237 g and 1 cup of yogurt is 245 g, a difference of 8 g per cup.
Is 1 gram of water equal to 1 ml?
Yes, at normal kitchen temperatures. That is why a cup of water (about 237 ml) weighs about 237 g.