How many grams is 1 cup of cornstarch?

1 cup of cornstarch weighs about 130 g.

Is the cup-to-gram value the same for every brand?

It is close, but density varies slightly with brand, humidity and how tightly you pack it. Weigh on a scale when accuracy matters.

Cups of cornstarch to grams

Answer

1 cup of cornstarch = 130 g

Convert any amount

Amount cup = – gram

Conversion table

Cups	Grams
0.25 cups	32.4 g
0.5 cups	64.8 g
0.75 cups	97.2 g
1 cup	130 g
1.5 cups	194 g
2 cups	259 g
3 cups	389 g
4 cups	518 g

Based on the US customary cup of 240 ml. A metric cup (250 ml) is about 4% larger.

Handy tools for this

Digital kitchen scale The most accurate way to bake — skip the cup guesswork and weigh straight into the bowl to the nearest gram. Check price → Measuring cups set A sturdy nested set of US cups for recipes written in cups. Cheap, dishwasher-safe and built to last. Check price → Measuring spoons Tablespoon and teaspoon set for small, precise amounts of baking powder, salt and spices. Check price →

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How to measure

Cornstarch is very light and packs easily. Spoon it into the cup and level off — a packed cup can weigh noticeably more and over-thicken a sauce.

Frequently asked questions

How many grams is 1 cup of cornstarch?: 1 cup of cornstarch weighs about 130 g.
Is the cup-to-gram value the same for every brand?: It is close, but density varies slightly with brand, humidity and how tightly you pack it. Weigh on a scale when accuracy matters.

Related conversions

Values are approximate — ingredient density varies with brand, humidity and how you measure. For baking, weighing on a scale is always the most reliable method.