Grams to cups of cornstarch
100 g of cornstarch = 0.78 cups
Measure: about ¾ cup + 1 tbsp. Based on 128 g per US cup of cornstarch (USDA).
Converter
Ingredient: cornstarch, 128 g per US cup
0.78 cups
Measure: about ¾ cup + 1 tbsp
Type a number — fractions like 3/4 or 1 1/2 work too.
Grams of cornstarch in cups
US cups, level. The measure is the nearest you can make with a standard set of cups and spoons.
| Grams | Cups | Measure |
|---|---|---|
| 25 g | 0.2 | ≈ 3 tbsp |
| 50 g | 0.39 | ≈ ⅓ cup + 1 tbsp |
| 75 g | 0.59 | ≈ ½ cup + 1 tbsp |
| 100 g | 0.78 | ≈ ¾ cup + 1 tbsp |
| 125 g | 0.98 | ≈ 1 cup |
| 150 g | 1.17 | ≈ 1 cup + 3 tbsp |
| 200 g | 1.56 | 1½ cups + 1 tbsp |
| 250 g | 1.95 | ≈ 1¾ cups + 3 tbsp |
| 300 g | 2.34 | ≈ 2⅓ cups |
| 400 g | 3.13 | 3 cups + 2 tbsp |
| 500 g | 3.91 | ≈ 3¾ cups + 3 tbsp |
Cups of cornstarch in grams
| Amount | Grams | Ounces |
|---|---|---|
| 1 tsp | 2.7 g | 0.09 oz |
| 1 tbsp | 8 g | 0.28 oz |
| ⅛ cup | 16 g | 0.56 oz |
| ¼ cup | 32 g | 1.13 oz |
| ⅓ cup | 42.7 g | 1.51 oz |
| ½ cup | 64 g | 2.26 oz |
| ⅔ cup | 85.3 g | 3.01 oz |
| ¾ cup | 96 g | 3.39 oz |
| 1 cup | 128 g | 4.52 oz |
| 1½ cups | 192 g | 6.77 oz |
| 2 cups | 256 g | 9.03 oz |
| 3 cups | 384 g | 13.5 oz |
| 4 cups | 512 g | 18.1 oz |
A cup of cornstarch is 128 g. It is light and settles as it sits, so spoon it into the cup and level it off instead of scooping, which packs it down and overshoots.
Where this number comes from
USDA FoodData Central lists 1 cup of “Cornstarch” at 128 g (FDC ID 169698, SR Legacy).
Everything else is worked out from that figure: spoons from 1 cup = 16 tablespoons = 48 teaspoons, and ounces and pounds from their exact definitions (1 oz = 28.349523125 g, 1 lb = 453.59237 g, NIST).
Source: FoodData Central, USDA Agricultural Research Service.
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