Convert Cups of Cornstarch to Ounces
1 cup of Cornstarch =
4.2oz
Spooned and leveled
Frequently Asked Questions
How many grams are in 1 cup of Cornstarch?
One US cup of Cornstarch weighs approximately 120g. This is the standard reference weight used by King Arthur Baking and the USDA. Use a kitchen scale for the most accurate measurement; volume measurement can vary by 5-10% depending on how you scoop.
Should I use a scale or measuring cups for Cornstarch?
A digital kitchen scale is more accurate than measuring cups for Cornstarch. Volume measurement varies by how you scoop or pack the cup, while weight is consistent. For recipes where precision matters (especially baking), weighing Cornstarch at 120g per cup gives the most reliable result.
Where do these Cornstarch conversion values come from?
The conversion values for Cornstarch on this page come from the following authoritative sources: King Arthur Ingredient Weight Chart;USDA FDC #169698. We cross-reference multiple sources when they're available to ensure accuracy.