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Cornstarch: cups to grams

One US cup of cornstarch weighs about 128 grams (4.5 oz). Use the converter or the tables below.

Cornstarch cup to gram chart

CupsGramsOunces
1/4 cup32 g1.1 oz
1/3 cup43 g1.5 oz
1/2 cup64 g2.3 oz
2/3 cup85 g3.0 oz
3/4 cup96 g3.4 oz
1 cup128 g4.5 oz
1.5 cup192 g6.8 oz
2 cup256 g9.0 oz
3 cup384 g13.5 oz
4 cup512 g18.1 oz

Spoons and millilitres

AmountWeight
1 tablespoon8.0 g
1 teaspoon2.7 g
1 fluid ounce16.0 g
100 ml54.1 g

Why weights can differ

Cup measures are not exact. How you scoop, pack or sift cornstarch changes the weight, and brands vary slightly. These figures use a standard US cup of 236.6 ml and common reference values, so treat them as close estimates. For baking, a kitchen scale gives the most reliable result.

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