Grams Per Cup

Cornstarch: Cups to Grams

One US cup of cornstarch weighs about 120 grams (4.2 oz). Use the converter or the chart below for any amount.

Quick answer

Unit
Ingredient
Cornstarch
—

Approximate values. Density varies with how the ingredient is packed, sifted, or measured.

Cornstarch cups to grams chart

Amount Grams Ounces
1/8 cup cornstarch 15 g 0.5 oz
1/4 cup cornstarch 30 g 1.1 oz
1/3 cup cornstarch 40 g 1.4 oz
1/2 cup cornstarch 60 g 2.1 oz
2/3 cup cornstarch 80 g 2.8 oz
3/4 cup cornstarch 90 g 3.2 oz
1 cup cornstarch 120 g 4.2 oz
1 1/2 cups cornstarch 180 g 6.3 oz
2 cups cornstarch 240 g 8.5 oz
3 cups cornstarch 360 g 12.7 oz
1 tablespoon cornstarch 7.5 g 0.3 oz
1 teaspoon cornstarch 2.5 g 0.1 oz

Cornstarch grams to cups

Working the other way? Since 1 cup of cornstarch is about 120 g, here is how common gram weights convert back to cups.

Grams Cups (approx)
50 g cornstarch 0.42 cups
100 g cornstarch 0.83 cups
125 g cornstarch 1.04 cups
150 g cornstarch 1.25 cups
200 g cornstarch 1.67 cups
250 g cornstarch 2.08 cups
500 g cornstarch 4.17 cups

Measuring cornstarch accurately

Also called cornflour in the UK. Because a cup measures volume rather than weight, the most reliable way to get the same result every time is to weigh cornstarch on a kitchen scale and aim for the gram figure above. The conversions on this page are based on the US cup of about 236.6 ml.

FAQ

How many grams is 1 cup of cornstarch?
One US cup of cornstarch weighs about 120 grams (4.2 oz). Also called cornflour in the UK.
How many grams is half a cup of cornstarch?
Half a US cup of cornstarch is about 60 grams.
How many grams is 1 tablespoon of cornstarch?
One tablespoon of cornstarch is about 7.5 grams, since a tablespoon is one sixteenth of a cup.

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