White Onions Nutrition Facts & Calories

100g of white onions contain about 38 calories (kcal).
Calories per: ounce | one white onion | cup | half cup

For example, a medium size white onion (110 g) contain about 42 calories.

This is about 2% of the daily caloric intake for an average adult with medium weight and activity level (assuming a 2000 kcal daily intake).

White onion key facts

The nutrients that matter most in fruit and vegetables, per 100 g, compared with carrot.

Nutrient (per 100 g)	White Onions	Carrot a common vegetable
Fiber	1.9 g	2.8 g
Vitamin C	8.2 mg	5.9 mg
Potassium	182 mg	320 mg

• White onion has 19% more calories than the typical vegetable on this site (32 kcal per 100 g is the median of vegetables).

To visualize how much 42 kcal actually is, keep in mind that the calorie content of medium size white onion is similar to that of, for example:

• 0.5 medium apple (96 kcal)
• 0.5 medium banana (116 kcal)
• 1.5 medium carrots (25 kcal each)
• 0.5 medium potato (69 kcal)

Take a quick look at the tables below for detailed information about white onion nutrition.