Calories in Cornstarch: Per 100 g, Per Serving & Nutrition Facts
381 kcal (1,594 kJ) per 100 g · P/F/C 0.3/0.1/91 g
Serving (10 g) — 38 kcal (159 kJ) · Nutri-Score C
Per 100 g: sugar: low saturated fat: low salt: low fiber: low
Is cornstarch healthy?
In moderation. Cornstarch sits in the middle of the scale — grade C on the open 2023 Nutri-Score algorithm: fine in a balanced diet, but not a “more is better” food.
For
- All green on the traffic light: 0 g sugar, 0 g salt and 0 g saturated fat per 100 g.
Against
- Little fiber: 0.9 g per 100 g.
A typical serving is 10 g: 38 kcal, 0 g protein, 0 g fat and 9.1 g carbs. Other weights in the table.
How we judge this, and the sources
The answer comes from the food's composition, not from opinion: its Nutri-Score grade on the open 2023 algorithm, a traffic light for sugar, salt, saturated fat and fiber per 100 g, and the share of daily reference amounts in a typical serving (for salt, sugar, fiber and vegetables, those of the WHO). It rates the food's nutrient profile; it is not medical advice. Formulas, thresholds and every source are on the methodology page; last checked against the sources on September 30, 2026. The short food description was written by our language model (AI) — how we check the text.
Cornstarch is almost pure carbohydrate, with only traces of protein and fat. A tablespoon (about 8 g) thickens a cup of sauce and adds around 30 calories.
How many calories in cornstarch: per 100 g and per serving
| Nutrient | Per 100 g | Serving: 10 g |
|---|---|---|
| Calories | 381 kcal | 38 kcal |
| Energy (kilojoules) | 1,594 kJ | 159 kJ |
| Protein | 0.3 g | 0 g |
| Fat | 0.1 g | 0 g |
| incl. saturated | 0 g | 0 g |
| Total carbohydrates | 91 g | 9.1 g |
| incl. sugars | 0 g | 0 g |
| incl. fiber | 0.9 g | 0.1 g |
| Salt | 0 g | 0 g |
*Where the numbers come from
Values per 100 g come from a single record of an open food composition table: USDA FoodData Central, FDC ID 169698, “Cornstarch” — the measured composition of this exact food, not an average across tables. Rounded. Carbohydrates are total carbohydrate, fiber included, as on a US Nutrition Facts label; salt is sodium × 2.5. Table licenses are on the data sources page.
protein 0%fat 0%carbs 100%
Vitamins and minerals in cornstarch
No single vitamin or mineral reaches 10% of the Daily Value per 100 g; the value of this food is elsewhere (see the nutrition table above).
| Nutrient | Per 100 g | Serving: 10 g | % DV |
|---|---|---|---|
| Iron | 0.47 mg | 0.05 mg | 0% |
| Copper | 0.05 mg | 0.01 mg | 1% |
| Manganese | 0.05 mg | 0.01 mg | 0% |
| Selenium | 2.8 mcg | 0.28 mcg | 1% |
*Where the vitamin numbers come from
Vitamins and minerals come from the USDA FoodData Central record “Cornstarch” (FDC ID 169698, SR Legacy; public domain), checked October 14, 2026; the record was matched to this food by calories, protein and fat. % DV is per serving, against the FDA Daily Values used on Nutrition Facts labels (2,000-calorie diet). The table lists nutrients that reach at least 2% DV per 100 g; the rest are absent or trace. Varieties, seasons and brands differ, and cooking in water leaches some vitamin C and B vitamins.
Cornstarch calories by weight, 5–50 g
15 g of cornstarch has 57 calories and 20 g has 76. The table gives protein, fat and carbs for each weight; for any other amount, type your own into the calculator below.
| Weight | Kcal | P / F / C, g | Fiber, g |
|---|---|---|---|
| 5 g | 19 | 0 / 0 / 4.6 | 0 |
| 10 g — typical serving | 38 | 0 / 0 / 9.1 | 0.1 |
| 15 g | 57 | 0 / 0 / 14 | 0.1 |
| 20 g | 76 | 0.1 / 0 / 18 | 0.2 |
| 30 g | 114 | 0.1 / 0 / 27 | 0.3 |
| 50 g | 191 | 0.2 / 0.1 / 46 | 0.5 |
Calories in cornstarch by spoon and serving
| Measure | Kcal | P / F / C, g |
|---|---|---|
| 1 teaspoon (2.7 g) | 10 | 0 / 0 / 2.5 |
| 1 tablespoon (8 g) | 30 | 0 / 0 / 7.3 |
| serving, 10 g | 38 | 0 / 0 / 9.1 |
How we count
Piece weights are averages. Spoons are level US measures: 1 tsp = 4.9 ml, 1 tbsp = 14.8 ml, 1 cup = 240 ml; the weight follows the density of the food (USDA FoodData Central measure weights). The diary uses the same measures — log a portion in pieces, spoons or grams.
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Cornstarch: calories by type and cooking method
“Calories per 100 g” depends on which kind you mean — dry or cooked, oil in the pan, what it's served with. Every row comes from the same database the diary uses.
| Per 100 g | Kcal | P / F / C, g |
|---|---|---|
| Potato starch | 313 | 0.1 / 0 / 79 |
| Cornstarch | 381 | 0.3 / 0.1 / 91 |
Cornstarch: more nutrition highlights
There's almost no sugar: the carbohydrate is mostly starch.
Swaps for cornstarch
Cornstarch has almost no fiber (0.9 g per 100 g), but our database has no same-category swap that fixes this noticeably at the same calories and is a full grade better. The simplest move is a smaller serving. How we pick swaps.
Cornstarch vs similar foods: calories compared
| Per 100 g | Kcal | P / F / C, g |
|---|---|---|
| Pasta | 135 | 5 / 0.6 / 28 |
| Jasmine Rice | 143 | 2.4 / 0.8 / 32 |
| Pinto Beans | 143 | 9 / 0.7 / 26 |
| Tempeh | 157 | 16 / 4.7 / 14 |
| Chickpeas | 164 | 8.9 / 2.6 / 27 |
| Mac and Cheese | 190 | 8 / 8 / 22 |
| Cornstarch | 381 | 0.3 / 0.1 / 91 |
FAQ
How many calories are in 100 g of cornstarch?
100 g of cornstarch has 381 calories, with 0.3 g protein, 0.1 g fat and 91 g carbohydrates (0.9 g fiber).
How many calories are in a serving of cornstarch?
A 10 g serving has 38 calories: 0 g protein, 0 g fat and 9.1 g carbs.
What are the macros of cornstarch?
Per 100 g: 0.3 g protein, 91 g carbs and 0.1 g fat. By calories that's about 0% protein, 100% carbs and 0% fat.
How many calories are in a tablespoon of cornstarch?
A level US tablespoon (14.8 ml, about 8 g) has 30 calories; a teaspoon (4.9 ml, 2.7 g) has 10.
How much fiber is in cornstarch?
100 g of cornstarch has 0.9 g of fiber; a 10 g serving has 0.1 g — 0% of the 25 g a day the WHO recommends.
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