1/3 cup of cornstarch in grams

1/3 cup of cornstarch weighs about 43 grams.

Grams43 g
Ounces1.51 oz
Tablespoons5.33 tbsp
Teaspoons16 tsp
Milliliters (volume)79 ml

This is based on 1 cup of cornstarch = 128 g, so 1/3 cup of cornstarch is 1/3 × 128 ≈ 43 g.

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

Other amounts of cornstarch

Full cornstarch conversion chart →