🫙 Grams of Cornstarch to Cups
Fine starch thickener used in sauces and baking.
128g
per US cup
Tip: Pick an ingredient first — cups depend on density.
🫙 Cornstarch
200g cornstarch = 1.56 cups
25
Tablespoons
US tablespoons
369.67
Milliliters
Approx.
7.05
Ounces
Weight
0.441
Pounds
Weight
Calculation Formula
200g ÷ 128g/cup = 1.56 cups
Cornstarch conversion chart
Common gram amounts converted to cups using 128g per cup.
| Grams | Cups | Tablespoons |
|---|---|---|
| 25g | 0.2 cups | 3.1 tbsp |
| 50g | 0.39 cups | 6.3 tbsp |
| 100g | 0.78 cups | 12.5 tbsp |
| 125g | 0.98 cups | 15.6 tbsp |
| 150g | 1.17 cups | 18.8 tbsp |
| 200g | 1.56 cups | 25 tbsp |
| 250g | 1.95 cups | 31.3 tbsp |
| 300g | 2.34 cups | 37.5 tbsp |
| 500g | 3.91 cups | 62.5 tbsp |
| 1000g | 7.81 cups | 125 tbsp |
Frequently asked questions
How many cups is 1 cup of cornstarch?
By definition, 1 cup of cornstarch is 1 cup — but by weight that's 128g, since 1 US cup of cornstarch weighs 128 grams.
Why isn't cornstarch the same weight as flour or sugar?
Every ingredient has its own density: how tightly it packs into a measuring cup. Powdery, airy ingredients weigh less per cup than dense liquids or packed sugars, so each ingredient needs its own gram value.
Does this account for sifting or packing?
Measuring technique (spooned vs. scooped, packed vs. loose) can shift results by 10-20%. For best accuracy, use a kitchen scale.
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Double-acting leavening agent; density varies by brand.
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