Cornstarch cups to grams chart
1 US cup of cornstarch weighs 112 g, or 4 oz. That is 8 g lighter than a cup of all-purpose flour (120 g), so swapping one for the other cup for cup changes the weight in the bowl. The weight is from King Arthur Baking, checked in November 2026.
US cups | Grams | Ounces |
|---|---|---|
¼ cup | 28 | 1 |
⅓ cup | 37 | 1.3 |
½ cup | 56 | 2 |
⅔ cup | 75 | 2.6 |
¾ cup | 84 | 3 |
1 cup | 112 | 4 |
1 ½ cups | 168 | 5.9 |
2 cups | 224 | 7.9 |
Cornstarch grams to cups chart
The closest measure you can scoop with cups and spoons, and the exact amount in cups.
Grams | Kitchen measure | Cups |
|---|---|---|
50 g | ¼ cup plus 3 tablespoons | 0.45 |
100 g | ¾ cup plus 2 tablespoons | 0.89 |
125 g | 1 cup plus 2 tablespoons | 1.12 |
150 g | 1 ⅓ cups | 1 ⅓ |
200 g | 1 ¾ cups plus 2 teaspoons | 1.79 |
250 g | 2 ¼ cups | 2 ¼ |
500 g | 4 ½ cups | 4 ½ |
Cornstarch in tablespoons and teaspoons
1 tablespoon of cornstarch weighs 7 g and 1 teaspoon weighs 2.5 g. A cup is 16 tablespoons or 48 teaspoons.
Grams | Tablespoons | Teaspoons |
|---|---|---|
5 g | 0.71 | 2 ⅛ |
10 g | 1.43 | 4 ¼ |
15 g | 2.14 | 6 ⅜ |
25 g | 3.57 | 10 ⅔ |
50 g | 7.14 | 21 ½ |
100 g | 14 ⅓ | 43 |
How do you measure a cup of cornstarch?
Fill the cup without pressing and level the top. How the cornstarch settles changes what a cup weighs, so for baking a scale is the surer measure.
More conversions
All 103 ingredients in one place: the cups to grams converter.
Starting from a weight: the grams to cups converter.
Small amounts: grams to tablespoons and teaspoons.
Flours and starches: Cornmeal, Potato starch, Tapioca starch, Sourdough starter, All-purpose flour.
