Quick answer
128 g1 cup
64 g½ cup
8 g1 tablespoon
2.7 g1 teaspoon
US cup of 236.6 ml, spooned in loosely and leveled. Tablespoon = 15 ml; teaspoon = 5 ml.
Convert any amount
Cups of cornstarch to grams
| Cups | Grams | Ounces |
|---|---|---|
| ⅛ cup | 16 g | 0.56 oz |
| ¼ cup | 32 g | 1.1 oz |
| ⅓ cup | 42.7 g | 1.5 oz |
| ½ cup | 64 g | 2.3 oz |
| ⅔ cup | 85.3 g | 3 oz |
| ¾ cup | 96 g | 3.4 oz |
| 1 cup | 128 g | 4.5 oz |
| 1½ cups | 192 g | 6.8 oz |
| 2 cups | 256 g | 9 oz |
| 3 cups | 384 g | 13.5 oz |
Tablespoons and teaspoons to grams
| Measure | Grams |
|---|---|
| 1 teaspoon | 2.7 g |
| ½ tablespoon | 4 g |
| 1 tablespoon | 8 g |
| 2 tablespoons | 16 g |
| 3 tablespoons | 24 g |
| 4 tablespoons (¼ cup) | 32 g |
Grams of cornstarch to cups
| Grams | Cups | Tablespoons |
|---|---|---|
| 25 g | 0.2 cup | 3.1 |
| 50 g | 0.39 cup | 6.2 |
| 100 g | ¾ cup | 12.5 |
| 125 g | 1 cup | 15.6 |
| 150 g | 1⅛ cups | 18.8 |
| 200 g | 1½ cups | 25 |
| 250 g | 2 cups | 31.2 |
| 300 g | 2⅓ cups | 37.5 |
| 500 g | 4 cups | 62.5 |
| 1000 g | 7¾ cups | 125 |
How to measure it
Cornstarch is a very fine starch that packs easily, so stir or sift it before measuring. To thicken, 1 tablespoon (8 g) thickens about 1 cup of liquid; mix it into a little cold water first so it doesn't lump.
FAQ
How many grams are in a cup of cornstarch?
+
One US cup (236.6 ml) of cornstarch weighs about 128 g, or 4.5 oz. Half a cup is 64 g and a quarter cup is 32 g.
How many cups is 100 grams of cornstarch?
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100 g of cornstarch is ¾ cup, or about 12.5 tablespoons.
How much does a tablespoon of cornstarch weigh?
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A level tablespoon (15 ml) of cornstarch weighs about 8 g, and a teaspoon (5 ml) about 2.7 g.
Which cup do these charts use?
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The US customary cup of 236.6 ml. If your recipe uses a 250 ml metric cup (Australia, UK), multiply the grams by 1.06.