1 cup of cornstarch in grams
1 cup of cornstarch weighs about 128 grams.
| Grams | 128 g |
|---|---|
| Ounces | 4.52 oz |
| Tablespoons | 16 tbsp |
| Teaspoons | 48 tsp |
| Milliliters (volume) | 237 ml |
This is based on 1 cup of cornstarch = 128 g, so 1 cup of cornstarch is 1 × 128 ≈ 128 g.
Searching for “1 cup corn starch”? The answer is about the same: 128 g.
How to measure 1 cup of cornstarch
By weight (most accurate): set your bowl on a kitchen scale, press tare, and add 128 g of cornstarch.
By volume: Use a 1-cup measure, or 16 tablespoons.
Cornstarch is usually measured by the tablespoon for thickening. A slurry of 1 tablespoon mixed with cold water thickens about a cup of liquid.
Why cornstarch weighs what it does
Cornstarch is about 46% lighter than the same volume of water, which weighs about 237 g per cup. That is why you can't convert cups to grams without knowing the ingredient.
1 cup of other ingredients
The same 1 cup holds a very different weight depending on the ingredient:
| Ingredient | 1 cup in grams |
|---|---|
| Cornstarch | 128 g |
| All-purpose flour | 120 g |
| Bread flour | 120 g |
| Whole wheat flour | 113 g |
| Almond flour | 96 g |
| Cocoa powder | 85 g |
| Granulated sugar | 200 g |
| Butter | 227 g |
| Water | 237 g |
Other amounts of cornstarch
Full cornstarch conversion chart → · Cornstarch by the tablespoon →