About Onions
Onions are one of the most commonly used vegetables in kitchens worldwide. They can be eaten raw, cooked, roasted, grilled, or caramelized.
Onions are known for their strong flavor, aroma, and beneficial plant compounds such as quercetin.
How Many Calories Are in Onions?
Onions contain about 40 calories per 100 grams, making them a low-calorie vegetable that adds flavor and nutrients to meals.
Onion Nutrition Facts (per 100g)
| Calories | 40 kcal |
| Protein | 1.1 g |
| Fat | 0.1 g |
| Carbohydrates | 9.3 g |
| Fiber | 1.7 g |
| Sugar | 4.2 g |
| Water | 89% |
Vitamins and Minerals
- Vitamin C - 7.4 mg
- Vitamin B6 - 0.1 mg
- Folate - 19 mcg
- Potassium - 146 mg
- Calcium - 23 mg
Health Benefits of Onions
- Contains antioxidants
- Supports heart health
- May help reduce inflammation
- Supports immune function
- Adds flavor with few calories
Calories in Different Portions
- 100g onion - 40 kcal
- 1 medium onion - about 44 kcal
- 1 cup chopped onion - about 64 kcal
- 1 ounce onion - about 11 kcal
Popular Onion Dishes
- Caramelized onions
- Onion soup
- Onion salad
- Grilled onions
- Fried onions
Are Onions Good for Weight Loss?
Yes, onions can be good for weight loss because they are low in calories and add a lot of flavor to meals without adding much fat.
Additional Facts
- Onions are used in cuisines all over the world.
- They contain sulfur compounds that give them their strong smell.
- They can be eaten raw or cooked.
- Different onion varieties include yellow, red, and white onions.
Possible Downsides
Some people may experience bloating or digestive discomfort after eating onions, especially in large amounts.
FAQ
How many calories are in onions?
About 40 kcal per 100g.
Are onions healthy?
Yes, onions contain antioxidants and useful nutrients.
Can onions be eaten raw?
Yes, onions can be eaten raw or cooked depending on the dish.