Vegetables
Calories in Onion
Onion has 40 calories per 100g — that's 44 calories in a typical serving (1 medium, 110g).
| Nutrient | Per 100g | Per serving1 medium · 110g |
|---|---|---|
| Calories | 40 kcal | 44 kcal |
| Protein | 1.1 g | 1.2 g |
| Carbs | 9 g | 9.9 g |
| Fat | 0.1 g | 0.1 g |
| Fiber | 1.7 g | 1.9 g |
| Sugar | 4.2 g | 4.6 g |
| Sodium | 4 mg | 4 mg |
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Values are typical reference figures and vary with brand, preparation, and portion. This is general information, not medical or dietary advice.