Sweet onion

Sweet onions, raw
Nutritional value per 100 g (3.5 oz)
Energy	133 kJ (32 kcal)
Carbohydrates	7.55 g
Sugars	5.02
Dietary fiber	0.9 g
Fat	0.08 g
Protein	0.8 g
Vitamins
Vitamins and minerals
Vitamins	Quantity %DV†
Thiamine (B1)	3% 0.041 mg
Niacin (B3)	1% 0.133 mg
Pantothenic acid (B5)	2% 0.098 mg
Vitamin B6	8% 0.13 mg
Folate (B9)	6% 23 μg
Vitamin C	5% 4.8 mg
Minerals	Quantity %DV†
Calcium	2% 20 mg
Iron	1% 0.26 mg
Magnesium	2% 9 mg
Manganese	3% 0.076 mg
Phosphorus	2% 27 mg
Potassium	4% 119 mg
Sodium	0% 8 mg
Zinc	1% 0.13 mg
	National Nutrient Database for Standard Reference
	†Percentages estimated using US recommendations for adults, except for potassium, which is estimated based on expert recommendation from the National Academies.

A sweet onion is a variety of onion that is not pungent. Their mildness is attributable to their low sulfur content and high water content when compared to other onion varieties.