How do I scale the original portion?

Start with 28 g per 0.25 cup. Multiply that gram amount by the requested number of source portions. The generated amount table uses the same calculation as the converter; displayed results are rounded only at the end.

Can I convert milliliters of cornstarch to grams here?

No independently verified density is available for this ingredient in this release. Cup/spoon reference weights cannot establish one without a verified source cup volume. Volume-to-volume and grams-to-ounces conversions still work.

Cornstarch: Cups to Grams Converter

Q: Which preparation does this cornstarch reference cover?

Cornstarch. The selected reference begins with a quarter-cup portion. Use the amount table to scale it for a recipe, and keep that estimate separate from any measured ingredient density.

Use ingredient estimates where supported, or convert volume and mass units. Check cooking measurement conventions.

Ingredient

Amount

From

Cornstarch: Estimate: 112 Grams

Estimate from the source portion, scaled using 1 cup = 16 tablespoons = 48 teaspoons. The source chart does not specify its cup volume in mL. Follow your recipe’s supplied grams when available.

Reference: 28 g per 0.25 cup. Cornstarch. King Arthur Baking ingredient weight chart.

The selected reference begins with a quarter-cup portion. Use the amount table to scale it for a recipe, and keep that estimate separate from any measured ingredient density. The source portion is 28 g per 0.25 cup. Cups and spoons are estimates scaled from this rounded reference using 16 tablespoons or 48 teaspoons per cup; the chart does not state its cup volume in mL.

Common Amounts (estimates)

Estimate from the source portion, scaled using 1 cup = 16 tablespoons = 48 teaspoons. The source chart does not specify its cup volume in mL. Follow your recipe’s supplied grams when available.

Cornstarch: estimated grams from the cited reference; values rounded to 2 decimal places.
Cups	Grams
1/4 cups	28 g
1/3 cups	37.33 g
1/2 cups	56 g
2/3 cups	74.67 g
3/4 cups	84 g
1 cup	112 g
2 cups	224 g

Frequently Asked Questions

Last reviewed: 2026-10-05 · Source: King Arthur Baking ingredient weight chart · see our methodology

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Cornstarch: Cups to Grams Converter

Common Amounts (estimates)

Frequently Asked Questions

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