Vegetable
Sweet onions (raw) Nutrition Facts
USDA description: Onions, sweet, raw
Per 100 g, Sweet onions (raw) provides 32 calories. A typical portion, 1 onion (331 g), has 106 calories, 2.6 g protein, 25 g carbs and 0.3 g fat.
- calories
- 32
- protein
- 0.8 g
- carbs
- 7.6 g
- fat
- 0.1 g
Per 100 g.
Calories and macros per serving
Serving weights are USDA's own for this record; each value is the per-100 g amount scaled to that weight. % = share of the FDA Daily Value.
| Serving | Calories | Protein | Carbs | Fat | Fiber | Sugars |
|---|---|---|---|---|---|---|
| 100 g | 322% | 0.8 g2% | 7.6 g3% | 0.1 g<1% | 0.9 g3% | 5 g |
| 1 servingNLEA label size · 148 g | 472% | 1.2 g2% | 11 g4% | 0.1 g<1% | 1.3 g5% | 7.4 g |
| 1 onion331 g | 1065% | 2.6 g5% | 25 g9% | 0.3 g<1% | 3 g11% | 17 g |
Calories in kcal. n/r = not reported for this food.
How Sweet onions ranks among vegetables
Rank 1 = the most of that nutrient among the vegetables on CalorieExplorer. Per 200 kcal shows nutrient density: how much you get for the same calories.
| Nutrient | Per 100 g | Per 200 kcal |
|---|---|---|
| Protein | 0.8 g#113 of 123 vegetables | 5 g#102 of 123 vegetables |
| Fiber | 0.9 g#100 of 112 vegetables | 5.6 g#92 of 112 vegetables |
| Potassium | 119 mg#118 of 123 vegetables | 744 mg#96 of 123 vegetables |
| Calcium | 20 mg#76 of 123 vegetables | 125 mg#67 of 123 vegetables |
| Iron | 0.26 mg#119 of 123 vegetables | 1.6 mg#109 of 123 vegetables |
| Magnesium | 9 mg#112 of 122 vegetables | 56 mg#109 of 122 vegetables |
| Vitamin C | 4.8 mg#96 of 120 vegetables | 30 mg#87 of 120 vegetables |
Macronutrient Breakdown
Compared with the median of vegetables
Per 100 g; median of the 122 vegetables with a value.
- Calories
- Sweet onions: 32 kcalmedian: 33 kcal
- Protein
- Sweet onions: 0.8 gmedian: 1.8 g
- Carbs
- Sweet onions: 7.6 gmedian: 6.9 g
- Fat
- Sweet onions: 0.1 gmedian: 0.3 g
- Fiber
- Sweet onions: 0.9 gmedian: 2.2 g
Vitamins and minerals
| Nutrient | Per 100 g | %DV | Per 1 onion (331 g) | %DV |
|---|---|---|---|---|
| Trans fat | 0 g | no DV | 0 g | no DV |
| Cholesterol | 0 mg | 0% | 0 mg | 0% |
| Sodium | 8 mg | <1% | 26 mg | 1% |
| Vitamin D | 0 µg | 0% | 0 µg | 0% |
| Calcium | 20 mg | 2% | 66 mg | 5% |
| Iron | 0.26 mg | 1% | 0.86 mg | 5% |
| Potassium | 119 mg | 3% | 394 mg | 8% |
| Vitamin A (RAE) | 0 µg | 0% | 0 µg | 0% |
| Vitamin C | 4.8 mg | 5% | 16 mg | 18% |
| Vitamin E | 0.02 mg | <1% | 0.07 mg | <1% |
| Vitamin K | 0.3 µg | <1% | 0.99 µg | 1% |
| Thiamin (B1) | 0.04 mg | 3% | 0.14 mg | 11% |
| Riboflavin (B2) | 0.02 mg | 2% | 0.07 mg | 5% |
| Niacin (B3) | 0.13 mg | 1% | 0.44 mg | 3% |
| Vitamin B6 | 0.13 mg | 8% | 0.43 mg | 25% |
| Folate (approx.) | 23 µg | 6% | 76 µg | 19% |
| Phosphorus | 27 mg | 2% | 89 mg | 7% |
| Magnesium | 9 mg | 2% | 30 mg | 7% |
| Zinc | 0.13 mg | 1% | 0.43 mg | 4% |
| Selenium | 0.5 µg | 1% | 1.7 µg | 3% |
| Copper | 0.06 mg | 6% | 0.19 mg | 21% |
| Manganese | 0.08 mg | 3% | 0.25 mg | 11% |
Not reported in this USDA record: Saturated fat, Vitamin B12.
Source: U.S. Department of Agriculture, FoodData Central, FDC ID 170008 (SR Legacy, April 2018 final release). Values per 100 g as published in that record, imported 2026-03-13; serving weights from the same record, retrieved 2026-10-13.
% Daily Value: FDA Daily Values (2016 Nutrition Facts label rule, 21 CFR 101.9), adults and children 4+. Ranks compare the foods of the same category on this site. How we calculate.
Last updated . Values are averages for the food as described; brands, varieties and cooking change them. Not medical advice.