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How many grams is a tablespoon of cornstarch?

1 tablespoon of cornstarch weighs 7 grams (0.25 oz), according to King Arthur Baking — Ingredient Weight Chart.

Cornstarch: cups to grams

AmountGramsOunces
1/4 cup28 g1.0 oz
1/3 cup37 g1.3 oz
1/2 cup56 g2.0 oz
2/3 cup75 g2.6 oz
3/4 cup84 g3.0 oz
1 cup112 g4.0 oz
1 tablespoon7 g0.25 oz
1 teaspoon2.3 g0.08 oz

US cup = 236.6 ml. Measured level.

FAQ

How many grams is 1/2 cup of cornstarch?

1/2 cup of cornstarch is about 56 grams, based on 112 g per US cup (King Arthur Baking — Ingredient Weight Chart).

How many grams is 1/4 cup of cornstarch?

1/4 cup of cornstarch is about 28 grams.

How many ounces is a cup of cornstarch?

A US cup of cornstarch weighs about 4.0 oz (112 g).

Why weigh instead of using cups?

Cups measure volume, so how you fill them changes how much you get. A kitchen scale gives the same amount every time, which is why bakers weigh.

Source: King Arthur Baking — Ingredient Weight Chart (112 g per US cup). Other amounts are calculated from that figure.