QUICK ANSWER
How many calories are in cornstarch?
The selected dry-cornstarch record provides 381 kcal per 100 g. Scale from the edible amount and keep other states separate.
381 kcal / 100 gNutrition values describe a reference food state, not every individual item. Variety, water content, preparation and portion weight can change the estimate.
THE NUMBERS
Cornstarch nutrition facts per 100 g
The values below use the reference state shown at the top of this page. Keeping one gram basis makes it easier to compare foods before translating the values to the portion you actually ate.
- Calories
- 381 kcal
- Protein
- 0.26 g
- Carbohydrate
- 91.3 g
- Fat
- 0.05 g
- Fibre
- 0.9 g
- Iron
- 0.47 mg
- Phosphorus
- 13 mg
- Potassium
- 3 mg
Source: USDA FoodData Central SR Legacy record 169698. Values may be rounded for readability.
SERVING SIZE
Calories by portion and serving weight
Words such as “small,” “medium,” “half” and “one piece” are convenient but imprecise. Grams make the estimate reproducible, particularly when natural foods vary in size.
MACROS
Carbohydrate, protein and fat explained
Protein
0.26 g per 100 g. From Cornstarch.
Carbohydrate
91.3 g per 100 g. From Cornstarch.
Fat
0.05 g per 100 g. From Cornstarch.
MORE THAN CALORIES
Fibre, vitamins and minerals
One food does not need to provide every nutrient. These are the characteristics most useful for understanding where cornstarch fits in a varied eating pattern.
Iron
0.47 mg per 100 g in the selected USDA record.
Phosphorus
13 mg per 100 g in the selected USDA record.
Potassium
3 mg per 100 g in the selected USDA record.
Magnesium
3 mg per 100 g in the selected USDA record.
FOOD STATE MATTERS
How preparation changes the nutrition estimate
A reliable calorie entry should describe the food you actually ate—not merely a food with a similar name.
Dry starch
Selected reference.
Slurry
Include the weighed starch and liquid.
Sauce or pudding
Use the complete recipe.
Coating
Count the starch that remains on the food.
PRACTICAL CONTEXT
How cornstarch can fit different goals
There is no universal “good” or “bad” food. Portion, frequency, the rest of the meal, preferences and individual health needs all matter.
Portion math
At 381 kcal per 100 g, the 15 g example is 57.1 kcal.
Fibre check
The selected record lists 0.9 g fibre per 100 g.
Protein check
The selected record lists 0.26 g protein per 100 g.
Best logging move
Weigh the dry starch actually used; a prepared recipe needs its full yield.
QUALITY & SAFETY
How to choose, store and prepare it
Store
Keep cornstarch sealed in a cool, dry place.
After opening or cutting
Use a clean, dry utensil after opening.
Prepare
Follow package directions when using it in food preparation.
Safety boundary
Discard contaminated or moisture-damaged starch; this nutrient record sets no storage duration.
PHOTO LOGGING
How to log cornstarch more accurately
A food photo can suggest the ingredient, but it cannot always reveal exact weight, hidden oil or preparation details. These checks turn an image guess into a better estimate.
- 01
Match the exact reference state: Cornstarch.
- 02
Use edible grams. Calories are scaled from the selected per-100-g record; named portion weights come from the same local USDA record, while explicitly labelled gram examples are calculated.
- 03
Log oil, sauce, sweetener, salt and recipe ingredients separately.
- 04
Use a separate record when preparation changes the food state.
COMMON QUESTIONS
Cornstarch calorie and nutrition questions
How many calories are in 100 g of cornstarch?
381 kcal in the selected Cornstarch record.
How much fibre is in cornstarch?
0.9 g per 100 g in the selected record.
Which cornstarch state does this page use?
Cornstarch. State and preparation are part of the answer.
Do these values describe cooked cornstarch pudding?
No. Pudding contains liquid and other ingredients and requires recipe calculation.
How are the portion calories calculated?
Each portion is scaled from 381 kcal per 100 g. Named weights come from the selected source record; calculated gram examples are labelled.
KEEP EXPLORING
Related food guides
SOURCES & METHOD
Where these numbers come from
Cornstarch, per 100 g edible portion. Numeric nutrition claims use the nutrition-reviewed local USDA record. Named portion claims use source-held weights; explicitly labelled gram examples are calculations from the per-100-g record. The nutrient record does not establish storage duration, clinical advice or food-safety limits; use package directions and current authoritative guidance where relevant.
Open USDA FoodData Central SR Legacy record 169698 ↗Page reviewed 26 August 2026. We show the food state, gram basis and source record so readers can check the estimate instead of treating one number as universally exact.