Food database › Vegetable › Onion
How many calories in an onion?
44 calper 1 medium (110 g)
A serving of onion — 1 medium (110 g) — has about 44 calories, with 1.2 g protein, 10.2 g carbs and 0.1 g fat, plus 1.9 g fiber.
Where those calories come from:
Protein 10%Carbs 88%Fat 2%
| Nutrient | Per serving (1 medium (110 g)) | Per 100 g |
|---|---|---|
| Calories | 44 cal | 40 cal |
| Protein | 1.2 g | 1.1 g |
| Carbs | 10.2 g | 9.3 g |
| of which sugars | 4.6 g | 4.2 g |
| Fat | 0.1 g | 0.1 g |
| Fiber | 1.9 g | 1.7 g |
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Onion calories — FAQ
How many calories are in an onion?
1 medium (110 g) of onion contains about 44 calories. That's roughly 40 calories per 100 grams.
How much protein is in an onion?
One serving (1 medium (110 g)) has about 1.2 g of protein, 10.2 g of carbs and 0.1 g of fat.
Is onion good for weight loss?
Onion can fit a weight-loss plan when it's logged and kept within your calorie budget. At 44 calories per serving, the key is tracking your total daily intake — that's what Nourish makes effortless.
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