Ingredient Conversion
Convert cornstarch from grams into cups with rounded kitchen-friendly values and a quick reference table.
Cornstarch does not use the same grams-to-cups value as every other ingredient. Using a practical US cup reference, 128 grams of cornstarch is about 1 cup.
That means 100 grams of cornstarch is about 0.78 cups, while 200 grams is about 1.56 cups.
Cornstarch is a fine, light powder. One US cup of cornstarch weighs about 128 grams and is often used in smaller quantities in recipes.
To convert grams to cups, divide the gram amount by the grams-per-cup reference for the ingredient. For this page, the working reference is about 128 grams per US cup.
This makes the page useful for quick kitchen checks, but a scale is still the best tool when a recipe depends on tight ratios.
| Grams | Cups |
|---|---|
| 25 | About 0.2 cups |
| 50 | About 0.39 cups |
| 75 | About 0.59 cups |
| 100 | About 0.78 cups |
| 125 | About 0.98 cups |
| 150 | About 1.17 cups |
| 200 | About 1.56 cups |
| 250 | About 1.95 cups |
| 300 | About 2.34 cups |
| 400 | About 3.12 cups |
This page is useful when a recipe gives cornstarch in grams but you only have measuring cups, or when you want a fast reference before opening the full converter.
For baking, repeated recipes, or larger batches, measuring cornstarch directly in grams is usually the more dependable choice.
A practical US cup reference for Cornstarch is about 128 grams per cup.
Cornstarch is a fine, light powder. One US cup of cornstarch weighs about 128 grams and is often used in smaller quantities in recipes.
For repeatable cooking and recipe scaling, grams are usually the more reliable way to measure cornstarch.
Use the main grams-to-cups converter for other ingredients, cup standards, and custom values.