Fruits
Calories in Grapefruit
Grapefruit has 42 calories per 100g — that’s 52 calories in a typical serving (½ fruit · 123 g).
| Nutrient | Per 100g | Per serving½ fruit · 123 g |
|---|---|---|
| Calories | 42 kcal | 52 kcal |
| Protein | 0.8 g | 1 g |
| Carbs | 11 g | 13.5 g |
| Fat | 0.1 g | 0.1 g |
| Fiber | 1.6 g | 2 g |
| Sugar | 7 g | 8.6 g |
| Sodium | 0 mg | 0 mg |
Common kitchen measures
| Measure | Weight | Calories |
|---|---|---|
| 1 cup | ≈ 247 g | 104 kcal |
Gram weights from USDA FoodData Central — reference values, not exact measurements.
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Closest matches in the same category — handy when you are deciding between two.
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Frequently asked questions
- How many calories are in Grapefruit?
- Grapefruit has 52 calories per ½ fruit (123 g).
- How many calories are in 100g of Grapefruit?
- 100g of Grapefruit has 42 calories, 0.8g protein, 11g carbs and 0.1g fat.
- How much protein is in Grapefruit?
- Grapefruit has 1g of protein per ½ fruit (123 g).
- How many calories are in 1 cup of Grapefruit?
- 1 cup of Grapefruit (≈ 247 g) has about 104 kcal.
Values are typical reference figures and vary with brand, preparation, and portion. This is general information, not medical or dietary advice.