Vegetables

Calories in an onion

1 slice (15 g) has 6 calories, and 100 g has 38.

1 slice (15 g)

6 kcal

  • Protein 0.1 g
  • Carbs 1.3 g
  • Fat 0 g

9% protein · 88% carbs · 2% fat (of calories from macros)

Per 100 g

Calories 38 kcal
Protein 0.9 g
Carbohydrates 8.5 g
Fiber 1.7 g
Sugars 5.8 g
Fat 0.1 g
Saturated fat 0 g
Sodium 1 mg

Calories by serving

Serving Calories Protein Carbs Fat
1 slice (15 g) 6 0.1 g 1.3 g 0 g
1 ring (5 g) 2 0 g 0.4 g 0 g
1 cup (160 g) 61 1.4 g 14 g 0.2 g
1 whole (148 g) 56 1.3 g 13 g 0.1 g

Values for “Onions, raw”, from the USDA FoodData Central (FNDDS): the food Ayme’s search shows first for “onion”. Brands and recipes vary, so check the label when you have one.