Calories in red onion
A typical serving of red onion provides about 64 calories. Here are the full macros and nutrition facts.
Per serving · 1 cup, chopped (160 g)
Calories
64kcal
Protein
1.8g
Carbs
14.9g
Fat
0.2g
Per 100 g
| Calories | 40 kcal |
| Protein | 1.1 g |
| Carbs | 9.3 g |
| Fat | 0.1 g |
| Saturated fat | 0.04 g |
| Fiber | 1.7 g |
| Sugars | 4.2 g |
| Sodium | 4 mg |
Data based on Open Food Facts and public nutrition databases.
Onion variety with purple skin and a slightly sweeter flavor than white onions, ideal for raw consumption.
Nutritional benefits
- Rich in anthocyanins and quercetin
- Natural anti-inflammatory properties
- Supports cardiovascular health
How to prepare it
- 1.Pickle with lemon and vinegar for tacos
- 2.Add thin slices to sandwiches and salads
- 3.Caramelize gently for burgers
Lighter alternatives
White onion
Stronger and sharper flavor
Shallots
More sophisticated and mild flavor
Leek
Much more subtle flavor and creamy texture
Healthy tip
Consume red onion raw or lightly pickled to maximize its quercetin content.
Frequently asked questions
Why do they make us cry?
Cutting them releases sulfur gas; chilling them before cutting reduces the effect.
How to get rid of onion breath?
Chewing fresh parsley or eating an apple usually helps.
Does it lose properties when cooked?
Cooking reduces Vitamin C content but maintains its antioxidants well.