White Onion, Raw — USDA FoodData Central nutrition facts (per 100g)

| Nutrient | Amount per 100g |
| --- | --- |
| Ash | 0 g |
| Calcium, Ca | 21 mg |
| Carbohydrate, by difference | 7.68 g |
| Copper, Cu | 0.047 mg |
| Energy | 35 kcal |
| Energy | 148 kJ |
| Fiber, total dietary | 1.2 g |
| Fructose | 2.52 g |
| Galactose | 0.03 g |
| Glucose | 2.63 g |
| Iron, Fe | 0.15 mg |
| Lactose | 0 g |
| Magnesium, Mg | 9.3 mg |
| Maltose | 0 g |
| Manganese, Mn | 0.099 mg |
| Nitrogen | 0.14 g |
| Phosphorus, P | 29 mg |
| Potassium, K | 141 mg |
| Protein | 0.89 g |
| Selenium, Se | 0 µg |
| Sodium, Na | 2 mg |
| Sucrose | 0.59 g |
| Sugars, Total | 5.76 g |
| Total lipid (fat) | 0.13 g |
| Water | 91.3 g |
| Zinc, Zn | 0.12 mg |

Values are raw as published by USDA at the 100g basis — not rounded per 21 CFR 101.9(c) label-declaration rules, and 100g is USDA's publication basis, not a serving size any US nutrition label declares against.

Source: USDA FoodData Central, FDC ID 1104962, usda_ff (released 2026-04-30). https://bettermenu.live/tools/ingredient-search/us/foods/white-onion-raw-1104962/