Calories in Onions, cooked, fat added
Generic food Cooked Vegetables
Onions, cooked, fat added contains 73 kcal per 100 g. A typical serving of 1 slice (15 g) provides about 11 kcal.
Roughly 56% of its calories come from carbohydrates, with 37% from fat and 7% from protein (estimated with general energy factors).
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 | 73 kcal | |
| Total fat C | 3.1 g | 4% |
| Saturated fat C | 0.83 g | 4% |
| Cholesterol C | 2 mg | 0.7% |
| Sodium C | 147 mg | 6% |
| Total carbohydrates C | 10.6 g | 4% |
| Dietary fiber C | 1.9 g | 7% |
| Total sugars C | 4.8 g | |
| Protein C | 1.3 g | 3% |
| Vitamin A C | 13 µg | 1% |
| Vitamin C C | 7.2 mg | 8% |
| Vitamin D C | 0 µg | 0% |
| Vitamin E C | 0.47 mg | 3% |
| Vitamin K C | 2.9 µg | 2% |
| Thiamin (B1) C | 0.047 mg | 4% |
| Riboflavin (B2) C | 0.029 mg | 2% |
| Niacin (B3) C | 0.13 mg | 0.8% |
| Vitamin B6 C | 0.14 mg | 8% |
| Folate (B9) C | 18 µg | 5% |
| Vitamin B12 C | 0 µg | 0% |
| Choline C | 7.2 mg | 1% |
| Calcium C | 27 mg | 2% |
| Iron C | 0.24 mg | 1% |
| Magnesium C | 11 mg | 3% |
| Phosphorus C | 33 mg | 3% |
| Potassium C | 167 mg | 4% |
| Zinc C | 0.19 mg | 2% |
| Copper C | 0.044 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 7%
- Carbohydrates 56%
- Fat 37%
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
- Protein per 100 kcal1.7 gprotein density, useful for comparing foods with different calorie levels
- Water84.2 gwater per 100 g, which largely explains differences between raw, cooked and dried forms
Full nutrient profile
Fats and cholesterol (2)
| Monounsaturated fat C | 1.1 g |
|---|---|
| Polyunsaturated fat C | 0.88 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 | 0.78 g |
| SFA 4:0 C | 0.021 g |
| SFA 6:0 C | 0.015 g |
| SFA 8:0 C | 0.009 g |
| SFA 10:0 C | 0.02 g |
| SFA 12:0 C | 0.024 g |
| SFA 14:0 C | 0.08 g |
| SFA 16:0 C | 0.47 g |
| SFA 18:0 C | 0.17 g |
| MUFA 18:1 C | 1 g |
| PUFA 18:3 C | 0.1 g |
| PUFA 20:4 C | 0.001 g |
| MUFA 16:1 C | 0.017 g |
| PUFA 18:4 C | 0 g |
| MUFA 20:1 C | 0.014 g |
| MUFA 22:1 C | 0 g |
| PUFA 22:5 n-3 (DPA) C | 0 g |
Carotenoids (6)
| Beta-carotene C | 7 µg |
|---|---|
| Lycopene C | 0 µg |
| Lutein + zeaxanthin C | 4 µg |
| Retinol C | 13 µg |
| Carotene, alpha C | 0 µg |
| Cryptoxanthin, beta C | 0 µg |
Other components (8)
| Water C | 84.2 g |
|---|---|
| Alcohol C | 0 g |
| Caffeine C | 0 mg |
| Theobromine C | 0 mg |
| Folic acid C | 0 µg |
| Folate, food C | 18 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 |
|---|---|---|---|---|
| Rutabaga, cooked Cooked | 63 | 1.1 g | 9 g | 2.9 g |
| Peppers and onions, cooked, fat added Cooked | 59 | 1 g | 8.1 g | 2.7 g |
| Carrots, NS as to form, cooked Cooked | 72 | 0.96 g | 10.4 g | 3 g |
| Carrots, fresh, cooked, fat added, NS as to fat type Cooked | 72 | 0.96 g | 10.4 g | 3 g |
| Carrots, fresh, cooked with oil Cooked | 76 | 0.95 g | 10.4 g | 3.4 g |
| Carrots, fresh, cooked with butter or margarine Cooked | 69 | 0.96 g | 10.4 g | 2.6 g |
| Corn, canned, cooked with butter or margarine Cooked | 85 | 2.2 g | 13.9 g | 3.4 g |
| Sweet potato, squash, pumpkin, chrysanthemum, or bean leaves, cooked Cooked | 57 | 2.1 g | 7.2 g | 2.9 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 73 kcal. 1 slice (15 g): about 11 kcal. 1 whole (151 g): about 110 kcal. 1 cup (215 g): about 157 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 0.19 g in 1 slice (15 g). About 7% of its calories come from protein.
How many carbs are in cooked onions?
Cooked onions has 10.6 g of total carbohydrates per 100 g, including 1.9 g of fiber and 4.8 g of sugars.
How much fat is in cooked onions?
Cooked onions contains 3.1 g of fat per 100 g, of which 0.83 g is saturated (4% of the Daily Value).
How much sodium is in cooked onions?
100 g contains 147 mg of sodium, 6% of the 2,300 mg Daily Value.
Does onions have the same nutrition cooked and raw?
No. Per 100 g, onions, cooked, fat added has 73 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 2709951. License: CC0 1.0 (U.S. public domain). Source record dated October 31, 2024. Imported November 6, 2026.
Last updated: . Data quality score: 100/100 (how it is calculated).
General nutrition information, not medical advice. Individual needs differ; see our disclaimer.