How many carbs are in cornstarch?
1 cup of cornstarch contains about 116.8g of carbohydrate, 115.7g net carbs after subtracting 1.2g of fiber, 0.3g of protein, and 488 calories.
Carbs by portion size
| Portion | Total carbs | Fiber | Net carbs |
|---|---|---|---|
| 1 cup (128g) | 116.8g | 1.2g | 115.7g |
| 100 grams (100g) | 91.3g | 0.9g | 90.4g |
Net carbs in cornstarch
1 cup of cornstarch contains 115.7g of net carbs — total carbs (116.8g) minus dietary fiber (1.2g). Net carbs are the carbs your body actually digests and that raise blood glucose. See our guide to net carbs for how this calculation works and when to use it.
Full nutrition for cornstarch (per 100g)
- Calories: 381 kcal
- Carbohydrate: 91.3g
- Dietary fiber: 0.9g
- Sugars: 0g
- Protein: 0.3g
- Fat: 0.1g
Reference values from USDA FoodData Central (sr legacy dataset, fdcId 169698). Values are per 100 grams.
Count carbs without typing
CarbZen scans any meal in 3 seconds with USDA-verified numbers. Three free scans every day, forever.
Download on the App StoreFrequently asked questions
How many carbs are in cornstarch?
1 cup of cornstarch contains about 116.8g of total carbohydrate. After subtracting 1.2g of fiber, the net carbs are about 115.7g.
How many net carbs are in cornstarch?
Net carbs in 1 cup of cornstarch are about 115.7g — that is total carbs (116.8g) minus dietary fiber (1.2g). See our net carbs explainer for the full calculation.
Is cornstarch good for diabetics?
Cornstarch contains carbohydrates that will raise blood glucose. Whether it fits your meal plan depends on the portion and your overall daily target. Most U.S. diabetes care teams use total carbs (not net) for insulin dosing — see our diabetes carb-counting guide.
Is cornstarch keto-friendly?
Whether cornstarch fits a keto plan depends on your daily net-carb budget (typically under 20–30g per day). One serving (1 cup) provides about 115.7g of net carbs.