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Amounts are per 100 grams, from USDA FoodData Central. Basic and whole foods are lab-measured (SR Legacy and Foundation Foods); branded packaged products carry the manufacturer's own label values. FoodFactsUSA reports what a food contains; it is not dietary advice.

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Onions, raw

USDA FoodData Central · SR Legacy · FDC ID 170000 · serving: 1 cup, chopped (160 g)

NutrientPer 100 gPer serving (1 cup, chopped)
Calories4064
Protein1.1 g1.8 g
Total fat0.1 g0.2 g
Saturated fat0.0 g0.1 g
Trans fat0.0 mg0.0 mg
Cholesterol0 mg0 mg
Total carbohydrate9.3 g14.9 g
Dietary fiber1.7 g2.7 g
Total sugars4.2 g6.8 g
Sodium4 mg6 mg
Potassium146 mg234 mg
Calcium23 mg37 mg
Iron0.2 mg0.3 mg
Magnesium10 mg16 mg
Zinc0.2 mg0.3 mg
Vitamin C7.4 mg11.8 mg
Vitamin A (RAE)0 µg0 µg
Vitamin D0 µg0 µg

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Source: U.S. Department of Agriculture, FoodData Central (SR Legacy). Values are laboratory measurements per 100 grams; the per-serving column scales them to the USDA reference portion. This is data about a food, not dietary advice.

Onions, raw — Nutrition Facts | FoodFactsUSA