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 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[dead link‍]
†Percentages estimated using US recommendations for adults,[1] except for potassium, which is estimated based on expert recommendation from the National Academies.[2]

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.