Grapefruit, 1 (3-3/4 dia)

Calories: 104

Carbs: 26g

Fat: 0.4g

Protein: 0g

104

Grapefruit, 123 g

Calories: 52

Carbs: 13g

Fat: 0g

Protein: 1g

52

Ruby Red, 264 g

Calories: 111

Carbs: 29g

Fat: 0.3g

Protein: 2.1g

111

Grapefruit, Red or Pink (Wikipedia), 0.5 Fruit (3-3/4" Dia)

Calories: 52

Carbs: 13g

Fat: 0.2g

Protein: 0.9g

52

Grapefruit, 150 g

Calories: 175

Carbs: 23.5g

Fat: 5g

Protein: 9g

175

Generic, 100 g

Calories: 42

Carbs: 11g

Fat: 0.1g

Protein: 0.8g

42

Whole, 0.5 fruit (3-3/4"dia)

Calories: 52

Carbs: 13g

Fat: 0.2g

Protein: 1g

52

Ruby Red, 0.5 RAW

Calories: 52

Carbs: 13g

Fat: 0g

Protein: 1g

52

Morrisons, 100 grams

Calories: 42

Carbs: 12.6g

Fat: 0.1g

Protein: 0.8g

42

Sunkist, 154 g (1/2 med grapefruit)

Calories: 60

Carbs: 16g

Fat: 0g

Protein: 1g

60