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Home/Proteins/Onion Soup
Proteins

Onion Soup Nutrition Facts

FoodData CentralUpdated 6 April 2026

One serving of onion soup contains 3.5 calories, 0.1g protein, 0.8g carbs, and 0g fat. Onion Soup is a protein-rich food that is very low in calories.

3.5

cal

0.8g

carbs

0.1g

protein

0g

fat

0.1g

fiber

0.1g

sugar

Vitamins in Onion Soup

Per 100g serving

Vitamin C
0.1mg
0%
Vitamin E
0.01mg
0%
Vitamin K
0.1mcg
0%
Vitamin B6
0.03mg
2%
Thiamin (B1)
0.01mg
1%
Riboflavin (B2)
0.01mg
1%
Niacin (B3)
0.06mg
0%

Minerals in Onion Soup

Per 100g serving

Calcium
9mg
1%
Iron
0.05mg
0%
Magnesium
4mg
1%
Phosphorus
9mg
1%
Potassium
31mg
1%
Sodium
346mg
15%
Zinc
0.05mg
0%
Selenium
0.2mcg
0%
Copper
0.03mg
3%
Manganese
0.03mg
1%

Learn More About Onion Soup

How Many Calories Are In Onion Soup?How Many Carbs Are In Onion Soup?How Much Protein Is In Onion Soup?How Much Fat Is In Onion Soup?How Much Fiber Is In Onion Soup?What Is Onion Soup Good For?Is Onion Soup Healthy?

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Verified Nutrition Data

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All nutritional data on Food Index is sourced from official U.S. government databases and verified by nutrition experts at leading federal agencies.

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Nutrient values from certified lab analysis

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Data reviewed by nutrition scientists

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Synced with latest official database releases

Nutritional values are based on standard reference data and may vary slightly based on preparation methods, brands, and natural variation in foods. Always consult with a healthcare professional for personalized dietary advice.

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