Cornstarch — Cups to Grams

1 cup of cornstarch = 120 grams

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Cornstarch conversion table

CupsGramsOuncesTablespoons
1/8 15 g 0.53 oz 2
1/4 30 g 1.06 oz 4
1/3 40 g 1.41 oz 5.33
1/2 60 g 2.12 oz 8
2/3 80 g 2.82 oz 10.7
3/4 90 g 3.17 oz 12
1 120 g 4.23 oz 16
1 1/2 180 g 6.35 oz 24
2 240 g 8.47 oz 32
3 360 g 12.7 oz 48

Related ingredients

Cocoa powder Baking soda Baking powder Table salt Ground cinnamon

How to measure cornstarch accurately

For the most reliable baking results, weigh cornstarch on a kitchen scale rather than scooping by volume. One US cup of cornstarch weighs about 120 grams, but the exact figure changes with how tightly it's packed and the brand. Use the table above for quick reference, or the converter for any custom amount.