Calories in onion
A typical serving of onion provides about 44 calories. Here are the full macros and nutrition facts.
Per serving · 1 medium onion
Calories
44kcal
Protein
1.2g
Carbs
10.2g
Fat
0.1g
Per 100 g
| Calories | 40 kcal |
| Protein | 1.1 g |
| Carbs | 9.3 g |
| Fat | 0.1 g |
| Saturated fat | 0 g |
| Fiber | 1.7 g |
| Sugars | 4.2 g |
| Sodium | 4 mg |
Data based on Open Food Facts and public nutrition databases.