Cornstarch Cups to Grams Converter
Convert cornstarch between cups and grams instantly, either direction.
1 cup of cornstarch = 120g (spooned into the cup and leveled off)
Type in either box — the other updates automatically.
How This Conversion Works
Grams = cups × 120 (the standard weight of 1 cup of cornstarch, spooned into the cup and leveled off). Cups = grams ÷ 120.
Worked example
A recipe calls for 100g of cornstarch.
100 ÷ 120 = 0.8333 cups
Frequently Asked Questions
How many grams is a cup of cornstarch?
1 cup of cornstarch, spooned into the cup and leveled off is 120 grams.
What should I know about measuring cornstarch?
This conversion is for cornstarch, spooned into the cup and leveled off, and cornstarch is fine and powdery, similar to flour in how it packs, so spoon it into the cup rather than scooping directly from the container to avoid over-measuring.
Should I use a kitchen scale instead of cups?
For baking specifically, yes if precision matters — weight doesn't vary with how tightly an ingredient is packed, so it's more consistent than volume measurement. This converter helps translate a cup-based recipe to weight, or a weight-based recipe back to cups.