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Cooking conversion
Grams of Cornstarch to Cups
How many cups of cornstarch are in a given weight? Type a number of grams below to see the volume. Math uses cornstarch's density of 0.541 g/mL.
Calculator
100 g of cornstarch = 0.781286 cup
Grams of Cornstarch to Cups Conversion Table
Common values for cornstarch:
| Grams of cornstarch | Cups |
|---|---|
| 10 g | 0.078129 cup |
| 25 g | 0.195321 cup |
| 50 g | 0.390643 cup |
| 100 g | 0.781286 cup |
| 150 g | 1.1719 cup |
| 200 g | 1.5626 cup |
| 250 g | 1.9532 cup |
| 500 g | 3.9064 cup |
| 1000 g | 7.8129 cup |
How this works
Cornstarch has a density of about 0.541 g/mL (king arthur baking: 1 cup = 128g). That means 1 mL of cornstarch weighs 0.541 grams.
Cups = grams × 0.0078
Note: Spooned and leveled.
Why a cup of cornstarch doesn't always weigh the same
Volume measurements are forgiving in some ways and brutal in others. A cup of cornstarch can vary by 10-20% in weight depending on how it's measured: spooned vs scooped, packed vs loose, sifted vs unsifted. The density figure used here matches the most common published recipe conventions, but if you're after baking precision, weighing on a kitchen scale is more accurate than measuring by volume.