Onions, Red
Onions, Red belongs to the vegetables category of our catalog. A 100 g serving provides 44 kcal with 0.9 g of protein, 0.1 g of fat, 9.9 g of carbohydrate. Related entries in the same group include Onions, Raw and Onions, Sweet, or jump to the full food catalog.
Calorie & macro balance
Share of calories from each macronutrient (per 100 g).
- Protein9.4%0.9 g
- Fat2.3%0.1 g
- Carbs88.3%9.9 g
Full nutrition facts (per 100 g)
| Nutrient | Per 100 g | % DV* |
|---|---|---|
| Energy | ||
| Calories | 44 kcal | 2% |
| Macronutrients | ||
| Protein | 0.9 g | 2% |
| Total Fat | 0.1 g | <1% |
| Saturated Fat | — | |
| Carbohydrate | 9.9 g | 4% |
| Dietary Fiber | 2.2 g | 8% |
| Total Sugars | 5.8 g | 12% |
| Minerals | ||
| Sodium | 1 mg | <1% |
| Potassium | 197 mg | 4% |
| Calcium | 17 mg | 1% |
| Iron | 0.2 mg | 1% |
| Magnesium | 11.4 mg | 3% |
| Vitamins | ||
| Vitamin C | 8.1 mg | 9% |
| Vitamin A | — | |
| Vitamin D | — | |
| Other | ||
| Cholesterol | — | |
* Percent of the Daily Value (based on a 2,000 kcal diet).
Data source: USDA FoodData Central. Values are per 100 g of edible portion and are reference figures — they vary by variety, preparation and brand. Last updated: 2026-04-30.
Frequently asked questions
- How many calories are in Onions, Red?
- A 100 g serving of Onions, Red has 44 kcal. The calories in your portion depend on its weight and how it is prepared.
- How much protein is in Onions, Red?
- Per 100 g there are 0.9 g of protein — about 2% of the Daily Value (50 g).
- How much fat and carbs are in Onions, Red?
- Per 100 g there are 0.1 g of fat and 9.9 g of carbohydrate, including 2.2 g of fiber.
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Note. This information is provided for general reference only and is not medical advice or a diet prescription. If you have a medical condition or special dietary needs, consult a physician or a registered dietitian.