Calories in Red Onions

📏 Serving Size: 3.5 ONZ (100.0g)

🧪 Nutrition Facts

Amount Per Serving
  • Calories 40.0
  • Total Fat 0.0 g
  • Saturated Fat 0.0 g
  • Cholesterol 0.0 mg
  • Sodium 0.0 mg
  • Potassium 0.0 mg
  • Total Carbohydrate 9.0 g
  • Dietary Fiber 2.0 g
  • Sugars 6.0 g
  • Protein 1.0 g
Vitamins & Minerals
  • Vitamin A 0.0 IU
  • Vitamin B-12 0.0 µg
  • Vitamin B-6 0.0 mg
  • Vitamin C 0.0 mg
  • Vitamin D 0.0 IU
  • Vitamin E 0.0 mg
  • Calcium 20.0 mg
  • Copper 0.0 mg
  • Folate 0.0 µg
  • Iron 0.4 mg
  • Magnesium 0.0 mg
  • Manganese 0.0 mg
  • Niacin 0.0 mg
  • Pantothenic Acid 0.0 mg
  • Phosphorus 0.0 mg
  • Riboflavin 0.0 mg
  • Thiamin 0.0 mg
  • Zinc 0.0 mg

Note: Nutrition information comes from the USDA Food Central Database. Daily values are based on a 2,000 calorie per day diet (FDA). Actual requirements vary by individual. Use at your own risk.

📋 Nutrition Summary

Red Onions is a very low-calorie food at 40.0 calories per serving (3.5 ONZ (100.0g)), making it a smart choice for calorie-conscious diets. Carbohydrates are the primary energy source at 9.0g per serving (90% of calories).

🏷️ Diet & Nutrition Tags

✅ Low Carb / Keto-Friendly ✅ Low Calorie

Tags are generated automatically from USDA nutrition data using standard dietary thresholds. They are for general guidance only and are not medical advice.

📝 Ingredients

Organic Red Onions.

🔬 Ingredient Analysis

✅ Clean Ingredients

No artificial preservatives, sweeteners, colours, emulsifiers, flavour enhancers, or synthetic fortification agents were detected in the ingredient list for Red Onions. This does not guarantee the food is unprocessed or free from all additives — always read the full ingredient label.

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📊 % Daily Value

The following shows how one serving of Red Onions contributes to the recommended daily intake for key nutrients, based on a 2,000 calorie diet.

Nutrient Amount % Daily Value
Calories40.0 kcal2%
Total Carbohydrate9.0 g3%
Dietary Fiber2.0 g7%
Total Sugars6.0 g12%
Protein1.0 g2%
Calcium20.0 mg2%
Iron0.4 mg2%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. ✅ marks ≥20% DV (FDA "good source" threshold); ⭐ marks ≥100% DV (a full day's value).

🔥 Calorie Analysis

Red Onions accounts for 2% of a standard 2,000 calorie daily diet per serving. The majority of the calories for this food comes from carbohydrates. Carbohydrates make up 90% of the calories.

Carbs 90%
Carbs 90% Protein 10%

🏃 Exercise Burn Time

How long would it take to burn off the 40.0 calories in Red Onions? The table below shows burn time for a 170-pound person doing common exercises.

Exercise Minutes to Burn
Running: 10 minutes per mile 3.0 min
Walking: 17 minutes per mile 6.9 min
Cycling (Low Intensity) 4.4 min
HIIT 3.7 min
Jumping Jacks 3.9 min

Find more information on calories burned doing popular exercises.

💬 Nutrition Q&A: Red Onions

Is Red Onions good for weight loss?

Red onions are excellent for weight loss since they're very low in calories at just 40 per 100g serving. Their natural sweetness and satisfying crunch make them useful for adding flavor to meals without derailing your calorie goals, plus the 2g of fiber per serving helps you feel fuller longer.

Is Red Onions a good snack for kids?

While some kids enjoy raw red onion slices, they're more commonly cooked into dishes where their strong flavor becomes milder and sweeter, making them more appealing to younger palates. Caramelized or roasted red onions tend to be the kid-friendly preparation.

What diets does Red Onions suit?

These work well across most diets, including keto (used sparingly due to carbs), paleo, vegan, vegetarian, and whole food approaches. They're particularly valuable in Mediterranean and plant-based diets where they serve as a foundational aromatic ingredient.

What does Red Onions pair well with for a balanced meal?

Red onions complement proteins like grilled chicken, fish, and beans beautifully, especially when caramelized or grilled. They also pair well with whole grains and roasted vegetables to create satisfying, complete meals.

How does Red Onions fit into a balanced diet?

Red onions contribute fiber, essential minerals like iron, and beneficial plant compounds called flavonoids that support overall health. Their minimal calories and fat, combined with natural sweetness, make them valuable for adding volume and nutrition to balanced meals without excess calories.

Nutrition Q&A answers are based on USDA nutritional data and are for general informational purposes only. They are not a substitute for professional dietary or medical advice.

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