How Many Calories in Onion?
1 ceapă medie (110g) = 44 kcal
Nutritional Values per 100g
Standard Serving
1 ceapă medie (110g) contains 44 calories.
Best time: Anytime - raw in salads or cooked in most dishes
Benefits
- ✓Very low in calories (40 kcal/100g), can be used generously to add flavor without caloric impact
- ✓Contains quercetin, an antioxidant linked to anti-inflammatory and cardiovascular effects
- ✓Natural prebiotics (fructans) that feed beneficial gut bacteria
- ✓A source of vitamin C and B6 for immunity and energy metabolism
- ✓Sulfur compounds that may have mild antibacterial effects
Considerations
- !Can cause bloating or digestive discomfort in people sensitive to FODMAPs
- !Cooking at high heat with lots of oil can add significant calories to an otherwise very low-calorie food
- !Raw onion can cause reflux or gastric irritation in predisposed individuals
FitAzi Tip
FitAzi uses onion as a flavor base for almost any cooked dish, without meaningful caloric impact if sauteed in a little water or oil spray instead of freely poured oil. Caramelized onion adds natural sweetness to dishes without needing added sugar.
Frequently Asked Questions
A medium onion (about 110g) has 44 calories, with 1.2g protein, 10.2g carbs, and 0.1g fat. It's one of the lowest-calorie vegetables, which is why it can be used generously for flavor without a meaningful caloric impact.
100g of raw onion has 40 calories, with 1.1g protein, 9.3g carbs (4.2g of which is natural sugar), and 1.7g fiber. When cooked (sauteed or roasted), onion keeps roughly the same calories per 100g, though it loses water and appears denser.
Yes, significantly more, but not because of the onion itself - because of the oil absorbed. Raw onion stays at 40 kcal/100g, but sauteing it in a tablespoon of oil can add 100-120 calories to the whole pan, depending on how much oil is used. For the fewest calories, saute onion in a little water or use an oil spray.
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Disclaimer
Nutritional values shown are approximate and may vary depending on preparation method and origin. Consult a nutrition specialist for personalized recommendations.