Calories in Onion

Onion contains 40 calories per 100 grams. Here's the complete nutrition breakdown.

Nutrition Facts

Per 100g serving

Calories40
Total Fat0.1g
Total Carbohydrate9g
Dietary Fiber1.7g
Sugars4.2g
Protein1.1g
Sodium4mg

Calories by Serving Size

100 grams40 cal
1 cup60 cal
1 serving (85g)34 cal

About Onion Nutrition

Onion is a nutritious food containing 40 calories per 100 grams. With 1.1g of protein, 9g of carbohydrates, and 0.1g of fat, it can be part of a balanced diet.

Macronutrient Breakdown

  • Protein: 1.1g - 11% of calories
  • Carbohydrates: 9g - 90% of calories
  • Fat: 0.1g - 2% of calories

Health Considerations

Onion contains 1.7g of fiber per 100g.

Quick Facts

CategoryVegetables
Calories/100g40
Protein/100g1.1g

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