100g Cornstarch in Cups
100 grams of cornstarch is ¾ cup — 128g per US cup. Shortbread, custards and large fruit fillings use cornstarch in this range, where it replaces part of the flour to soften the crumb.
How many cups is 100g of cornstarch?
100 grams of cornstarch equals:
Measuring by hand? That is 12 tablespoons + 1½ teaspoons.
Cornstarch compacts in the box. Spoon it into the measure and level it, and always slurry it with cold liquid before it meets heat.
Grams to Cups Converter
Quick select
100 grams of Cornstarch is about ¾ cup, using a 236.588 millilitre cup at 128 grams per cup.
Reading
- cups
- 0.78
- tbsp
- 12.5
- tsp
- 37.5
See the full 100g to cups guide →
US customary cup (236.588ml) · 128g per cup
Dedicated conversion guides use the default US customary cup.
Applies to this page only — the database value (128g per US cup) is unchanged.
100g of cornstarch vs other ingredients
Grams measure weight and cups measure volume, so the same 100 grams fills a different amount of cup for every ingredient:
| Ingredient | 100g in cups | g per cup |
|---|---|---|
| Cornstarch | ¾ cup | 128 |
| All-Purpose Flour | ¾ cup | 125 |
| Granulated Sugar | ½ cup | 200 |
| Butter | ½ cup | 227 |
See all 100g conversions on the 100 grams to cups chart.
Nearby cornstarch amounts
Full ladder on the cornstarch grams to cups chart.
Frequently Asked Questions
How many cups is 100g of cornstarch?
100 grams of cornstarch is ¾ cup. In kitchen measures that is 12 tablespoons + 1½ teaspoons, worked out from 128 grams per US cup.
How many grams are in 1 cup of cornstarch?
One US cup of cornstarch weighs about 128 grams, one tablespoon about 8 grams, and one teaspoon about 2.67 grams. This page divides 100 grams by that cup weight.
Is 100g of cornstarch the same as 100g of all-purpose flour?
No. 100g of cornstarch is ¾ cup, while 100g of all-purpose flour is ¾ cup. Same weight on the scale, different volume in the cup, because the two have different densities.
How do I measure 100g of cornstarch without a scale?
Use 12 tablespoons + 1½ teaspoons. Cornstarch compacts in the box. Spoon it into the measure and level it, and always slurry it with cold liquid before it meets heat.
Is it better to weigh cornstarch or measure it in cups?
Weighing is more accurate, especially in baking, because it removes the variation in how the cornstarch is packed into the cup. If you have no scale, use the cup figure above and keep your measuring method consistent across the whole recipe.