Red Onion Nutrition Facts: Calories, Macros & Health Benefits
Summary: Red Onion contains 180 calories, 1.5g protein, 28g carbs, and 6g fat per one tablespoon (15g). It is a source of sodium, iron, zinc.

Nutrition Facts — one tablespoon (15g)
| Nutrient | Amount | % Daily Value |
|---|---|---|
| Calories | 180 kcal | 9% |
| Protein | 1.5g | 3% |
| Carbohydrates | 28.0g | 10% |
| Total Fat | 6.0g | 8% |
| Fiber | 2.5g | 9% |
| Sugar | 22.0g | -- |
| Saturated Fat | 0.80g | 4% |
| Sodium | 450.0mg | 20% |
| Potassium | 8.0mg | 0% |
| Calcium | 15.0mg | 1% |
| Iron | 250.0mg | 1389% |
| Magnesium | 0.20mg | 0% |
| Zinc | 30.0mg | 273% |
| Vitamin C | 0.03mg | 0% |
| Vitamin A | 0.02mcg | 0% |
| Vitamin B6 | 0.20mg | 12% |
| Vitamin B12 | 0.10mcg | 4% |
| Folate | 15.0mcg | 4% |
| Vitamin E | 0.50mg | 3% |
| Phosphorus | 2.0mg | 0% |
Is Red Onion Good for You?
Red Onion provides 180 calories per one tablespoon (15g) with 1.5g protein, 28g carbohydrates, and 6g fat. It is a source of sodium (20% dv), iron (1389% dv), zinc (273% dv).
A sweet-tangy South Indian condiment of caramelized red onions simmered with vinegar, sugar, oil, and spices.
Key Health Benefits of Red Onion
- Sodium (20% DV): Supports balanced nutrition when included as part of your daily meals.
- Iron (1389% DV): Supports balanced nutrition when included as part of your daily meals.
- Zinc (273% DV): Supports balanced nutrition when included as part of your daily meals.
- Vitamin B6 (12% DV): Supports balanced nutrition when included as part of your daily meals.
How to Track Red Onion Nutrition with Gram
Use Gram to log red onion and see calories, macros, and micronutrients in context. You can search by name or use AI food scanning to track meals quickly.
Frequently Asked Questions
How many calories are in red onion?
Red Onion contains 180 calories per one tablespoon (15g).
How much protein is in red onion?
Red Onion provides 1.5g of protein per one tablespoon (15g).
How many carbs are in red onion?
Red Onion has 28g of carbohydrates per one tablespoon (15g).
Is red onion good for tracking nutrition?
Yes. Red Onion can be logged by calories, macros, and micronutrients in the Gram app.
How should I use red onion in a meal plan?
Use Red Onion as part of a balanced meal and compare the protein, carbs, and fat values to your daily targets.
Track your nutrition with Gram
Snap a photo of your meal and let AI do the rest. Track calories, macros, and micronutrients effortlessly.
Nutrition data sourced from USDA FoodData Central. Track red onion and thousands of other foods with the Gram app.