Calories in Onions, cooked, as ingredient
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Onions, cooked, as ingredient contains 47 kcal per 100 g. A typical serving of 1 fl oz, with ice (23 g) provides about 11 kcal.
Roughly 88% of its calories come from carbohydrates, with 10% from protein and 2% from fat (estimated with general energy factors).
That is less energy than the typical item in not included in a food category on FoodFactly, where the median is 193 kcal per 100 g across 76 foods.
These values are for the cooked food. Raw and other preparations have their own values, listed separately below.
The data comes from the USDA Food and Nutrient Database for Dietary Studies (FNDDS), which calculates values from recipes of the ingredients.
Nutrition facts
| Nutrient | Amount per 100 g | % DV |
|---|---|---|
| Calories C | 47 kcal | |
| Total fat C | 0.12 g | 0.2% |
| Saturated fat C | 0.049 g | 0.2% |
| Cholesterol C | 0 mg | 0% |
| Sodium C | 5 mg | 0.2% |
| Total carbohydrates C | 11 g | 4% |
| Dietary fiber C | 2 g | 7% |
| Total sugars C | 5 g | |
| Protein C | 1.3 g | 3% |
| Vitamin A C | 0 µg | 0% |
| Vitamin C C | 7.4 mg | 8% |
| Vitamin D C | 0 µg | 0% |
| Vitamin E C | 0.02 mg | 0.1% |
| Vitamin K C | 0.5 µg | 0.4% |
| Thiamin (B1) C | 0.049 mg | 4% |
| Riboflavin (B2) C | 0.03 mg | 2% |
| Niacin (B3) C | 0.13 mg | 0.8% |
| Vitamin B6 C | 0.13 mg | 7% |
| Folate (B9) C | 19 µg | 5% |
| Vitamin B12 C | 0 µg | 0% |
| Choline C | 7.2 mg | 1% |
| Calcium C | 27 mg | 2% |
| Iron C | 0.25 mg | 1% |
| Magnesium C | 12 mg | 3% |
| Phosphorus C | 34 mg | 3% |
| Potassium C | 172 mg | 4% |
| Zinc C | 0.2 mg | 2% |
| Copper C | 0.046 mg | 5% |
| Selenium C | 0.6 µg | 1% |
% DV: percent of the FDA Daily Value for adults (reference amounts). Letters show how each value was obtained: M measured, C calculated, L label, Z assumed zero, I imputed. Vitamins and minerals not listed were not reported by the source.
Nutritional breakdown
- Protein 10%
- Carbohydrates 88%
- Fat 2%
Approximate share of calories, using general energy factors (4 kcal/g protein and carbohydrate, 9 kcal/g fat, 7 kcal/g alcohol).
Vitamins and minerals, % Daily Value per 100 g
Nutritional insights
- Protein1.3 gbelow the median for not included in a food category (median 2.8 g)
- Fiber2 gabove the median for not included in a food category (median 1.3 g)
- Sugars5 gabove the median for not included in a food category (median 2.7 g)
- Fat0.12 gin the lowest quarter of not included in a food category (median 0.78 g)
- Saturated fat0.049 gbelow the median for not included in a food category (median 0.16 g)
- Sodium5 mgin the lowest quarter of not included in a food category (median 69 mg)
- Protein per 100 kcal2.7 gprotein density, useful for comparing foods with different calorie levels
- Water87.2 gwater per 100 g, which largely explains differences between raw, cooked and dried forms
Full nutrient profile
Fats and cholesterol (2)
| Monounsaturated fat C | 0.015 g |
|---|---|
| Polyunsaturated fat C | 0.02 g |
Individual fatty acids (19)
| EPA (omega-3, 20:5 n-3) C | 0 g |
|---|---|
| DHA (omega-3, 22:6 n-3) C | 0 g |
| Linoleic acid (omega-6, 18:2) C | 0.015 g |
| SFA 4:0 C | 0 g |
| SFA 6:0 C | 0 g |
| SFA 8:0 C | 0 g |
| SFA 10:0 C | 0 g |
| SFA 12:0 C | 0 g |
| SFA 14:0 C | 0.005 g |
| SFA 16:0 C | 0.04 g |
| SFA 18:0 C | 0.005 g |
| MUFA 18:1 C | 0.015 g |
| PUFA 18:3 C | 0.005 g |
| PUFA 20:4 C | 0 g |
| MUFA 16:1 C | 0 g |
| PUFA 18:4 C | 0 g |
| MUFA 20:1 C | 0 g |
| MUFA 22:1 C | 0 g |
| PUFA 22:5 n-3 (DPA) C | 0 g |
Carotenoids (6)
| Beta-carotene C | 1 µg |
|---|---|
| Lycopene C | 0 µg |
| Lutein + zeaxanthin C | 4 µg |
| Retinol C | 0 µg |
| Carotene, alpha C | 0 µg |
| Cryptoxanthin, beta C | 0 µg |
Other components (8)
| Water C | 87.2 g |
|---|---|
| Alcohol C | 0 g |
| Caffeine C | 0 mg |
| Theobromine C | 0 mg |
| Folic acid C | 0 µg |
| Folate, food C | 19 µg |
| Vitamin E, added C | 0 mg |
| Vitamin B-12, added C | 0 µg |
Other forms of Onions
Raw, cooked, dried and processed versions are separate records with their own measured values.
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Onion, raw Raw | 40 | 1.1 g | 9.3 g | 0.1 g |
| Onions, cooked, boiled, drained, without salt Cooked | 44 | 1.4 g | 10.2 g | 0.19 g |
| Onions, dehydrated flakes Dried or dry | 349 | 9 g | 83.3 g | 0.46 g |
| Onions, canned, solids and liquids Canned | 19 | 0.85 g | 4 g | 0.09 g |
| Onions, yellow, sauteed Cooked | 123 | 0.95 g | 7.9 g | 10.8 g |
| Onions, spring or scallions (includes tops and bulb), raw Raw | 32 | 1.8 g | 7.3 g | 0.19 g |
| Onions, young green, tops only | 27 | 0.97 g | 5.7 g | 0.47 g |
| Onions, welsh, raw Raw | 34 | 1.9 g | 6.5 g | 0.4 g |
| Onions, sweet, raw Raw | 32 | 0.8 g | 7.6 g | 0.08 g |
| Onions, cooked, boiled, drained, with salt Cooked | 42 | 1.4 g | 9.6 g | 0.19 g |
| Onions, frozen, chopped, cooked, boiled, drained, with salt Cooked | 26 | 0.77 g | 6 g | 0.1 g |
| Onions, frozen, chopped, unprepared Frozen | 29 | 0.79 g | 6.8 g | 0.1 g |
Per 100 g. Calories in kcal. n/a: not reported by the source.
Foods with a similar nutritional profile
| Food | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|
| Mirepoix, cooked, as ingredient Cooked | 41 | 1 g | 9.1 g | 0.19 g |
| Carrots, cooked, as ingredient Cooked | 50 | 0.98 g | 10.7 g | 0.36 g |
| Red pepper, cooked, as ingredient Cooked | 33 | 0.97 g | 7.2 g | 0.14 g |
| Cabbage, cooked, as ingredient Cooked | 32 | 1 g | 6.7 g | 0.24 g |
| Eggplant, cooked, as ingredient Cooked | 27 | 1.1 g | 6.3 g | 0.19 g |
| Green beans, cooked, as ingredient Cooked | 42 | 2.1 g | 7.7 g | 0.29 g |
| Tomatoes, cooked, as ingredient Cooked | 22 | 1.1 g | 4.9 g | 0.25 g |
| Green pepper, cooked, as ingredient Cooked | 25 | 0.77 g | 5.1 g | 0.12 g |
Per 100 g. Calories in kcal. n/a: not reported by the source.
Frequently asked questions
How many calories are in cooked onions?
100 g of cooked onions has 47 kcal. 1 fl oz, with ice (23 g): about 11 kcal. 1 fl oz, no ice (31 g): about 15 kcal. 1 fl oz, NFS (31 g): about 15 kcal.
How much protein is in cooked onions?
Cooked onions contains 1.3 g of protein per 100 g (3% of the 50 g Daily Value), or 0.3 g in 1 fl oz, with ice (23 g). About 10% of its calories come from protein. Compared with other not included in a food category, that is below the median (median 2.8 g).
How many carbs are in cooked onions?
Cooked onions has 11 g of total carbohydrates per 100 g, including 2 g of fiber and 5 g of sugars.
How much fat is in cooked onions?
Cooked onions contains 0.12 g of fat per 100 g, of which 0.049 g is saturated (0.2% of the Daily Value).
How much sodium is in cooked onions?
100 g contains 5 mg of sodium, 0.2% of the 2,300 mg Daily Value.
Does onions have the same nutrition cooked and raw?
No. Per 100 g, onions, cooked, as ingredient has 47 kcal, while onion, raw has 40 kcal. Cooking changes the water content, so always use the record that matches how you weigh the food.
Where does this nutrition data come from?
From USDA FoodData Central: FNDDS (Survey), record dated October 31, 2024. FoodFactly last checked it on November 6, 2026. Each value above shows whether it was measured, calculated or taken from a label.
Source of the nutrition information
- USDA FoodData Central: FNDDS (Survey), record 2710796. License: CC0 1.0 (U.S. public domain). Source record dated October 31, 2024. Imported November 6, 2026.
Last updated: . Data quality score: 95/100 (how it is calculated).
General nutrition information, not medical advice. Individual needs differ; see our disclaimer.