Calories and Protein in Grapefruit Juice
Nutrition data for grapefruit juice, pink, fresh, raw.
Quick answer: 1 cup (247 g) of grapefruit juice has about 96 calories, 1.2 g of protein, 0.2 g of fat and 23 g of carbohydrate. Per 100 g it has 39 calories and 0.5 g of protein. These figures are for grapefruit juice that is pink, fresh, raw.
- 96calories
- 1.2 gprotein
- 0.2 gfat
- 23 gcarbs
per 1 cup (247 g)
Serving sizes for grapefruit juice
| Serving | Weight | Calories | Protein | Fat | Carbs |
|---|---|---|---|---|---|
| 100 grams | 100 g (3.5 oz) | 39 | 0.5 g | 0.1 g | 9.2 g |
| 1 cup | 247 g (8.7 oz) | 96 | 1.2 g | 0.2 g | 23 g |
| juice of 1 grapefruit | 196 g (6.9 oz) | 76 | 1 g | 0.2 g | 18 g |
A cup of grapefruit juice weighs about 247 g. USDA lists about 196 g of juice from one grapefruit.
Full nutrition facts
| Nutrient | Per 100 g | Per 1 cup (247 g) | % Daily Value* |
|---|---|---|---|
| Calories | 39 | 96 | |
| Total fat | 0.1 g | 0.2 g | 0% |
| Saturated fat | 0 g | 0 g | 0% |
| Sodium | 1 mg | 2 mg | 0% |
| Total carbohydrate | 9.2 g | 23 g | 8% |
| Protein | 0.5 g | 1.2 g | 2% |
| Potassium | 162 mg | 400 mg | 9% |
| Calcium | 9 mg | 22 mg | 2% |
| Iron | 0.2 mg | 0.5 mg | 3% |
| Magnesium | 12 mg | 30 mg | 7% |
| Vitamin C | 38 mg | 93.9 mg | 104% |
*Percent Daily Value uses the FDA reference amounts for a 2,000 calorie diet and is calculated for 1 cup (247 g). Source: USDA FoodData Central, record 167774 (Grapefruit juice, pink, raw).
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About grapefruit juice nutrition
Grapefruit juice is tart and slightly bitter. It has fewer calories per 100 g than orange juice. Like the whole fruit, it can interact with some medicines, which the FDA warns about.
- Vitamin C: 94 mg in 1 cup, about 104 percent of the Daily Value.
How preparation changes the numbers
- The FDA advises checking with a pharmacist before drinking grapefruit juice if you take prescription medicine, since it can change how some drugs work.
- These figures are for plain pink juice. Grapefruit cocktails and sweetened blends have added sugar.
How grapefruit juice compares
Per 100 g, grapefruit juice ranks #26 of 30 foods on this site for protein and #8 for fewest calories.
Protein per 100 g
Calories per 100 g
Recipes with grapefruit juice
Questions about grapefruit juice
96 calories in 1 cup (247 g) of grapefruit juice, or 39 calories per 100 g. These figures are for grapefruit juice that is pink, fresh, raw.
1.2 g of protein in 1 cup (247 g) of grapefruit juice, or 0.5 g per 100 g. Protein makes up about 5 percent of its calories.
About 96 calories in a cup (247 g).
Per 100 g, grapefruit juice has 39 calories and orange juice 45, so grapefruit juice is a little lighter.
Ask your pharmacist first. The FDA says grapefruit juice can interfere with some prescription drugs, including certain statins, so it is worth checking your own medicine.
Related guides
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Sources and method
Nutrient values come from USDA FoodData Central (SR Legacy), record 167774: Grapefruit juice, pink, raw, retrieved 2026-09-30. Serving weights are USDA household measures, or a simple fraction of one. Brands, growing conditions and cooking method change real-world numbers, so treat every figure as a good estimate. Written and reviewed by Claudio; read how we develop and check our numbers.
