Data last updated: April 2026

Grapefruit vs Oats

Nutrition Comparison per 100g

Grapefruit 3
vs
7 Oats

Fruits vs Grains

Side-by-Side Nutrition Facts

Nutrient Grapefruit Oats Better
Calories 42kcal 389kcal Grapefruit
Protein 0.8g 16.9g Oats
Total Fat 0.1g 6.9g Grapefruit
Carbohydrates 10.7g 66.3g Oats
Fiber 1.6g 10.6g Oats
Sugar 6.9g 0g Oats
Vitamin C 31.2mg 0mg Grapefruit
Calcium 22mg 54mg Oats
Iron 0.1mg 4.7mg Oats
Potassium 135mg 429mg Oats

Macronutrient Breakdown

Grapefruit

Protein: 0.8g Fat: 0.1g Carbs: 10.7g

Oats

Protein: 16.9g Fat: 6.9g Carbs: 66.3g

Data Source

Nutrition data sourced from the USDA FoodData Central SR Legacy database. All values are per 100g of the food item. Actual nutritional content may vary by preparation method, brand, and serving size.

Grapefruit vs Oats — Key Takeaway

Grapefruit has 347 fewer calories per 100g than Oats, making it the lighter option. For protein, Oats leads with 16.9g per 100g. Oats is the better source of fiber at 10.6g per 100g. Grapefruit provides 31.2mg of vitamin C.

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