How many grams in a cup of cornstarch?

1 cup of cornstarch weighs about 128 grams (4.52 oz).

Cornstarch is usually measured by the tablespoon for thickening. A slurry of 1 tablespoon mixed with cold water thickens about a cup of liquid.

Cups to grams

CupsGramsOunces
1/8 cup16 g0.56 oz
1/4 cup32 g1.13 oz
1/3 cup43 g1.51 oz
1/2 cup64 g2.26 oz
2/3 cup85 g3.01 oz
3/4 cup96 g3.39 oz
1 cup128 g4.52 oz
1 1/2 cups192 g6.77 oz
2 cups256 g9.03 oz
3 cups384 g13.5 oz

Grams to cups

GramsCupsTablespoons
25 g0.2 cup3.1 tbsp
50 g3/8 cup6.3 tbsp
100 g0.78 cup12.5 tbsp
125 g0.98 cup15.6 tbsp
150 g1.17 cups18.8 tbsp
200 g1.56 cups25 tbsp
250 g1.95 cups31.3 tbsp
300 g2 1/3 cups37.5 tbsp
400 g3 1/8 cups50 tbsp
500 g3.91 cups62.5 tbsp
1000 g7.81 cups125 tbsp

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