Cups2Grams
Baking Essentials

Cornstarch: Grams to Cups

Convert grams of cornstarch to cups instantly. 1 US cup = 128g (spoon & level). Cornstarch (called cornflour in the UK and Australia) is a fine white starch used as a thickener and in baking.

Cornstarch is the pure starch extracted from corn kernels. It has zero protein, zero gluten, and extraordinary thickening power — about twice the thickening power of all-purpose flour. Sifting before use prevents lumps. In the UK, "cornflour" = cornstarch; "corn flour" (two words) = fine ground corn, which is a completely different product.

128g / US cupPure starch — no proteinAlso: cornflour (UK/AU)Thickening, coating, baking, custards
32g
¼ cup
256g
2 cups

Cornstarch Grams to Cups Calculator

Two-way converter with cup standard switcher, method toggle, and batch multiplier. All values update live.

Cup Standard
Method
Batch
Enter grams of cornstarch
For best accuracy, weigh cornstarch on a digital kitchen scale rather than using measuring cups or spoons.
Result
1.00
1 cup
cups
16.0
Tablespoons
48.0
Teaspoons
237
Millilitres
0.00
Oz (weight)
128g ÷ 128g/cup = 1.00 cups

Cornstarch Conversion Table

Common gram amounts converted to cups. Updates live when you change settings above.

Values based on 128g/US Cup · Spoon & Level · Change settings above to update
GramsFractionDecimal CupsTablespoonsWeight (oz)
13g⅛ cup0.10 cups1.6 tbsp0.46 oz
32g¼ cup0.25 cups4.0 tbsp1.13 oz
64g½ cup0.50 cups8.0 tbsp2.26 oz
96g¾ cup0.75 cups12.0 tbsp3.39 oz
128g= 1 cup10 cups1.00 cups16.0 tbsp4.52 oz
160g1¼ cups1.25 cups20.0 tbsp5.64 oz
192g1½ cups1.50 cups24.0 tbsp6.77 oz
256g20 cups2.00 cups32.0 tbsp9.03 oz
320g2½ cups2.50 cups40.0 tbsp11.29 oz
384g30 cups3.00 cups48.0 tbsp13.55 oz
512g40 cups4.00 cups64.0 tbsp18.06 oz
768g60 cups6.00 cups96.0 tbsp27.09 oz
1024g80 cups8.00 cups128.0 tbsp36.12 oz

US cup = 236.6ml. → Full cups to grams converter

Most-Searched Cornstarch Amounts

Common gram conversions for cornstarch using the US cup standard.

32g of cornstarch to cups

0.25 cups
= ¼ cup

Pie filling or medium-thick sauce.

64g of cornstarch to cups

0.50 cups
= ½ cup

Large batch sauce or coating.

96g of cornstarch to cups

0.75 cups
= ¾ cup

Large pie or thick custard recipe.

128g of cornstarch to cups

1.00 cups
= 1 cup

Full cup reference.

192g of cornstarch to cups

1.50 cups
= 1½ cups

Bulk thickening or large batch.

256g of cornstarch to cups

2.00 cups
= 2 cups

Commercial batch or bulk coating.

Cornstarch in Common Recipes

Real recipe amounts with gram and cup values for quick reference.

Chicken Stir-Fry Sauce (4)
16g — 2 tbsp
Blueberry Pie Filling (8)
32g — ¼ cup
Vanilla Pudding (4)
32g — ¼ cup
Crispy Fried Chicken (4)
64g — ½ cup
Gravure / Gravy (4 cups)
32g — ¼ cup
Shortbread Cookies (16)
32g — ¼ cup
Custard Filling (6)
32g — ¼ cup
Lemon Curd (1 cup)
16g — 2 tbsp

Cornstarch — Frequently Asked Questions

128 grams of cornstarch is exactly 1 US cup (spoon and level). Cornstarch is one of the more consistent powders to measure by cup.
In the UK and Australia, "cornflour" = cornstarch (the pure white starch). In the US, "corn flour" can mean fine-ground corn, which is a completely different product with protein and fibre. Always check which one your recipe means based on the country of origin.
Use 1 tablespoon (8g) of cornstarch per 1 cup (237ml) of liquid for a medium-thick sauce. For a thicker sauce or pie filling, use 2 tablespoons (16g) per cup of liquid. Always mix cornstarch with cold water first to form a slurry, then add to hot liquid.
Yes. Use half the amount of cornstarch as flour. Replace 2 tablespoons (16g) of flour with 1 tablespoon (8g) of cornstarch. Cornstarch produces a clearer, glossier sauce than flour-thickened sauces.
Cornstarch has no gluten and forms a very hard, thin shell when fried. It inhibits moisture absorption and creates a crunchier coating than flour alone. Many fried chicken and Asian-style recipes use 100% cornstarch or a cornstarch-flour mixture for maximum crunch.
Yes. Cornstarch is naturally gluten-free and is a common component in gluten-free flour blends. It improves texture and helps mimic the structure that gluten provides in regular flour.

Cornstarch in Tablespoons and Teaspoons

Quick reference: gram weights for common tablespoon and teaspoon amounts of Cornstarch. US tablespoon = 14.79 ml. US teaspoon = 4.93 ml.

1 US tablespoon
8 g
14.79 ml
1 US teaspoon
2.7 g
4.93 ml
1 AUS tablespoon
10.8 g
20 ml
AmountUS (14.79 ml)AUS (20 ml)
¼ teaspoon0.7 g0.9 g
½ teaspoon1.3 g1.8 g
1 teaspoon2.7 g3.6 g
1 tablespoon8 g10.8 g
2 tablespoons16 g21.6 g
3 tablespoons24 g32.5 g
4 tablespoons (¼ cup)32 g43.3 g

Use the tablespoons to grams converter or teaspoons to grams converter for any amount of any ingredient.

Need a different ingredient?

Precise conversions for 60+ baking and cooking ingredients.