Vegetables · Nutrition Facts
Red Onion Nutrition Facts
Red onions are a flavorful addition to many dishes, known for their high content of flavonoids and sulfur compounds, which provide health benefits.
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40kcal
Calories
1.1g
Protein
8.6g
Carbs
0.4g
Fat
Where the calories come from
Full nutrition breakdown
Nutrition Facts
Per 100g · Per serving (1 medium red onion, 100g)
| Nutrient | Per 100g | Per serving |
|---|---|---|
| Calories | 40kcal | 40kcal |
| Protein | 1.1g | 1.1g |
| Total Carbohydrates | 8.6g | 8.6g |
| Dietary Fiber | 1.7g | 1.7g |
| Sugars | 5.9g | 5.9g |
| Total Fat | 0.4g | 0.4g |
| Saturated Fat | 0.1g | 0.1g |
| Sodium | 4mg | 4mg |
| Water | 87.9g | 87.9g |
Adjust the serving size
Estimate nutrients in a portion of Red Onion. The calculation scales the values shown per 100 g; it is not a measurement of a specific food or product.
Listed serving: 1 medium red onion (100 g). Enter 1–5000 g.
- Calories
- 40 kcal
- Protein
- 1.1 g
- Carbohydrates
- 8.6 g
- Fiber
- 1.7 g
- Sugars
- 5.9 g
- Fat
- 0.4 g
- Sodium
- 4 mg
Estimate only. Food varieties, brands, preparation, and actual portion weights can change the values. Use product packaging for packaged foods.
Key vitamins & minerals
9% Daily Value
4% Daily Value
1% Daily Value
2% Daily Value
4% Daily Value
Serving ideas
- Slice it raw and add to salads.
- Grill it and use as a topping for burgers.
- Chop it and sauté with other vegetables.
Storage
Storage tip: Store red onions in a cool, dry place or in a perforated bag to maintain freshness.
Record status
This page presents a record from our public dataset. It has not been independently verified by a nutrition professional.
Source context
No exact USDA record match has been verified for this food. Search results may include candidates that do not match the exact record or values shown. Read our methodology.
Correction status
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Frequently asked questions
Are red onions good for weight loss?
Can red onions help with cholesterol?
Are red onions safe for diabetics?
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