Onion Nutrition Facts: Calories, Macros & Health Benefits

Summary: One half cup (75g) of onion contains 55 calories, 1.0g protein, 8.0g carbs, and 2.3g fat. Onion is a good source of essential vitamins and minerals.

vegetarian gluten-free low-carb
Onion - nutrition facts and calorie information

Nutrition Facts — half cup (75g)

8.0g
Carbs
1.0g
Protein
2.3g
Fat
NutrientAmount% Daily Value
Calories55 kcal3%
Protein0.98g2%
Carbohydrates8.0g3%
Total Fat2.3g3%
Fiber1.4g5%
Sugar3.6g--
Saturated Fat0.60g3%
Cholesterol1.5mg0%
Sodium110.2mg5%
Potassium125.2mg3%
Calcium20.2mg2%
Iron0.18mg1%
Magnesium8.2mg2%
Zinc0.14mg1%
Vitamin C5.4mg6%
Vitamin A9.8mcg1%
Vitamin B60.11mg6%
Folate13.5mcg3%
Vitamin K2.2mcg2%
Phosphorus24.8mg2%

Is Onion Good for You?

Onion provides 55 calories per half cup (75g) with 1.0g of protein, 8.0g of carbohydrates, and 2.3g of fat. It is a source of essential vitamins and minerals.

Key Health Benefits of Onion

Frequently Asked Questions

How many calories is in onion?

One half cup (75g) of onion contains 55 calories.

How much protein is in onion?

One half cup (75g) of onion provides 1.0g of protein.

Is onion vegetarian?

Yes, onion is suitable for vegetarian diets.

Is onion gluten-free?

Yes, onion is naturally gluten-free.

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Nutrition data sourced from USDA FoodData Central. Track onion and thousands of other foods with the Gram app.