Vegetables and Vegetable Products
Onions, yellow, raw
100 grams of onions (yellow, raw) has 38 calories, 0.83 g of protein, 0.05 g of total fat and 8.6 g of carbohydrate, including 1.9 g of fiber. These figures come from USDA FoodData Central (USDA Foundation Foods), in data USDA published Apr 1, 2020.
USDA Foundation FoodsFDC ID 790646Allium cepa
Amount
Portion weights are from USDA. The page recalculates in your browser.
Nutrition data per 100 g
Calories38
Amount% Daily Value*
- Total fat 0.05 g 0%
- Saturated fat —
- Trans fat —
- Monounsaturated fat —
- Polyunsaturated fat —
- Cholesterol —
- Sodium 1 mg 0%
- Total carbohydrate 8.6 g 3%
- Dietary fiber 1.9 g 7%
- Total sugars 5.8 g
- Protein 0.83 g 2%
* % Daily Value uses the FDA Daily Values for adults and children 4 years and older (21 CFR 101.9). A dash means USDA does not report that value for this food.
Key numbers per 100 g
Calories
38
Protein
0.83g
Total fat
0.05g
Carbohydrate
8.6g
Protein supplies about 9% of the calories in this food, using 4 calories per gram of protein. It has 1 mg of sodium per 100 g (0% of the 2,300 mg Daily Value).
This page shows laboratory and reference data for a generic food, not a specific product label. Packaged foods can differ, so check the label on the package you buy. This is not medical or nutrition advice.
Vitamins and minerals
Amounts per 100 g. Only nutrients USDA reports for this food are listed.
| Nutrient | Amount | % Daily Value | Daily Value |
|---|---|---|---|
| Vitamin C | 8.2 mg | 9% | 90 mg |
| Calcium | 15 mg | 1% | 1,300 mg |
| Iron | 0.28 mg | 2% | 18 mg |
| Potassium | 182 mg | 4% | 4,700 mg |
| Magnesium | 9 mg | 2% | 420 mg |
| Phosphorus | 34 mg | 3% | 1,250 mg |
| Zinc | 0.2 mg | 2% | 11 mg |
| Copper | 0.04 mg | 4% | 0.9 mg |
| Selenium | 0 mcg | 0% | 55 mcg |
| Water | 90.1 g | — | — |
Not reported by USDA for this food: Saturated fat, Trans fat, Monounsaturated fat, Polyunsaturated fat, Cholesterol, Vitamin A (RAE), Vitamin D, Vitamin E, Vitamin K, Thiamin (B1), Riboflavin (B2), Niacin (B3), Vitamin B6, Folate, Vitamin B12, Choline, Caffeine.Percent Daily Values are reference numbers for comparing foods, not personal targets.
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Portion sizes and weights
Household measures that USDA lists for onions (yellow, raw), with their weight in grams and the calories in each.
| Portion | Weight | Calories | Protein |
|---|---|---|---|
| 1 Onion, Edible | 143 g | 54 | 1.2 g |
| Reference amount (RACC) | 85 g | 32 | 0.71 g |
RACC is the FDA Reference Amount Customarily Consumed, the amount used as the basis for serving sizes on labels.
About these numbers
USDA FoodData Central reports nutrients per 100 grams of the edible portion. Foundation Foods values come from chemical analysis of food samples, with details on how each value was derived. Values from Foundation Foods release of Apr 30, 2026. Rounded for display; per-portion figures are calculated from the 100 g values.
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Sources
- U.S. Department of Agriculture, Agricultural Research Service. FoodData Central — USDA Foundation Foods, FDC ID 790646 (fdc.nal.usda.gov), published Apr 1, 2020.
- FDA Daily Values for adults and children 4 years and older (21 CFR 101.9) (fda.gov, eCFR).
- USDA and FDA do not endorse OpenPlate. Not medical or nutrition advice.