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2 1/2 Cups of Cornstarch in Grams

2 1/2 cups of cornstarch = 300 grams

That's 300 g, or 10.6 oz by weight.

2 1/2 cups of cornstarch in other units

Grams
300
Ounces
10.6
Metric cups (250 ml)
2.37
Tablespoons
40
Milliliters
591

Cornstarch converter

2.5 cups = 300 grams

How to convert cups of cornstarch to grams

One level US cup of cornstarch weighs about 120 g. Multiply: 2 1/2 × 120 = 300 g.

Spoon flour into the cup and level it with a knife. Scooping straight from the bag packs it down and can add 20–30% more.

Cornstarch: cups to grams chart

CupsGrams
1/8 cup15 grams
1/4 cup30 grams
1/3 cup40 grams
1/2 cup60 grams
2/3 cup80 grams
3/4 cup90 grams
1 cup120 grams
1 1/4 cups150 grams
1 1/2 cups180 grams
2 cups240 grams
2 1/2 cups300 grams
3 cups360 grams
4 cups480 grams

2 1/2 cups of other ingredients

The same amount weighs very different things depending on the ingredient:

IngredientGrams
All-Purpose Flour313 grams
Bread Flour318 grams
Self-Rising Flour313 grams
Whole Wheat Flour300 grams
Cake Flour285 grams
Almond Flour240 grams
Coconut Flour280 grams
Rye Flour255 grams
Spelt Flour255 grams
Oat Flour230 grams
Rice Flour395 grams
Tapioca Starch300 grams
Cornmeal345 grams
Semolina418 grams

More cornstarch conversions

Frequently asked questions

How many grams is 2 1/2 cups of cornstarch?

2 1/2 cups of cornstarch is 300 grams, based on 120 g per level US cup.

Is it different with a UK or Australian cup?

Slightly. UK, Australian and New Zealand recipes use a 250 ml metric cup, which is about 6% bigger than a US cup (236.6 ml). Using a metric cup, 2 1/2 cups of cornstarch would be 317 g.

Should I weigh cornstarch or measure it by volume?

Spoon flour into the cup and level it with a knife. Scooping straight from the bag packs it down and can add 20–30% more. Weighing is always more accurate, which is why grams are the safest choice for baking.