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Grapefruit Nutrition Facts: Is Grapefruit Good for You?
Raw grapefruit is a low-calorie fruit that is high in Vitamin C. A 100-gram serving provides 32 calories and 38% of the Daily Value for Vitamin C, with no fat, cholesterol, or sodium. It contains about 8 grams of carbohydrates, including 7 grams of sugar and 1 gram of fiber. Its nutritional value depends on portion size and how it fits into your overall diet, but it can contribute important nutrients.
Per 100 g · Grapefruit, raw, pink and red and white, all areas
What stands out in grapefruit
- High in vitamin C. A 100-gram serving of raw grapefruit contains 34.4 mg of Vitamin C. This amount supplies 38% of the recommended Daily Value, which qualifies as high in this nutrient.
- Low in calories and fat. Grapefruit is a low-calorie fruit, with 32 calories per 100 grams. It is also very low in fat, with only 0.1 grams per serving, and contains 0 mg of cholesterol and sodium.
- Source of carbohydrates and fiber. Each 100-gram serving has about 8 grams of carbohydrates, which includes 7 grams of total sugars. This portion also provides 1.1 grams of dietary fiber.
- Contains vitamin A. Raw grapefruit supplies 46 mcg of Vitamin A per 100 grams. This amount provides 5% of the Daily Value for this nutrient.
What to keep in mind
- A 100-gram portion of grapefruit contains 7 grams of total sugars. While it provides nutrients like Vitamin C, the sugar content is a factor to consider as part of a balanced diet.
Grapefruit nutrition facts per 100 g
| Nutrient | Per 100 g | % DV |
|---|---|---|
| Calories | 32 kcal | – |
| Protein | 0.63 g | 1% |
| Total fat | 0.1 g | 0% |
| Saturated fat | 0.01 g | 0% |
| Monounsaturated fat | 0.01 g | – |
| Polyunsaturated fat | 0.02 g | – |
| Cholesterol | 0 mg | 0% |
| Carbohydrate | 8.1 g | 3% |
| Dietary fiber | 1.1 g | 4% |
| Total sugars | 7 g | – |
| Water | 90.9 g | – |
| Sodium | 0 mg | 0% |
| Nutrient | Per 100 g | % DV |
|---|---|---|
| Potassium | 139 mg | 3% |
| Calcium | 12 mg | 1% |
| Iron | 0.09 mg | 0% |
| Magnesium | 8 mg | 2% |
| Phosphorus | 8 mg | 1% |
| Zinc | 0.07 mg | 1% |
| Copper | 0.05 mg | 5% |
| Manganese | 0.01 mg | 1% |
| Selenium | 0.3 mcg | 1% |
| Vitamin A (RAE) | 46 mcg | 5% |
| Vitamin C | 34.4 mg | 38% |
| Vitamin D | 0 mcg | 0% |
| Vitamin E | 0.13 mg | 1% |
| Vitamin K | 0 mcg | 0% |
| Thiamin (B1) | 0.04 mg | 3% |
| Riboflavin (B2) | 0.02 mg | 2% |
| Niacin (B3) | 0.25 mg | 2% |
| Vitamin B6 | 0.04 mg | 2% |
| Folate (DFE) | 10 mcg | 2% |
| Vitamin B12 | 0 mcg | 0% |
| Choline | 7.7 mg | 1% |
% Daily Value uses the FDA Daily Values for adults and children 4 years and older. Highlighted rows are 20% DV or more per 100 g. A dash means no Daily Value is set.
Grapefruit by portion
The nutrition in grapefruit changes with the serving size. Half of a medium grapefruit (128 g) provides 41 calories, 10.4 grams of carbohydrates, and 9 grams of sugar. A larger portion, such as one cup of sections with juice (230 g), contains 74 calories, 18.6 grams of carbohydrates, 16.1 grams of sugar, and 2.5 grams of fiber. Half of a small grapefruit is equivalent to the 100-gram reference serving.
| USDA portion | Weight | Calories | Protein | Carbs | Fiber | Fat |
|---|---|---|---|---|---|---|
| 1 cup sections, with juice | 230 g | 74 | 1.4 g | 18.6 g | 2.5 g | 0.2 g |
| 0.5 large (approx 4-1/2″ dia) | 166 g | 53 | 1 g | 13.4 g | 1.8 g | 0.2 g |
| 0.5 medium (approx 4″ dia) | 128 g | 41 | 0.8 g | 10.4 g | 1.4 g | 0.1 g |
| 0.5 small (approx 3-1/2″ dia) | 100 g | 32 | 0.6 g | 8.1 g | 1.1 g | 0.1 g |
How grapefruit compares with other fruits
Among 30 fruits analyzed, raw grapefruit ranks lower for calories, carbohydrates, and total sugars. Its Vitamin C content is relatively high, ranking 9th out of 30, and it ranks 6th for Vitamin A. Per 100 grams, its calorie count of 32 kcal is similar to other fruits like strawberries (32 kcal), watermelon (30 kcal), and cantaloupe (34 kcal). It has more dietary fiber (1.1 g) than watermelon or cantaloupe but less than strawberries (2.0 g) per 100-gram serving.
| Per 100 g | Calories | Protein | Carbs | Fiber | Fat |
|---|---|---|---|---|---|
| Grapefruit | 32 | 0.63 g | 8.1 g | 1.1 g | 0.1 g |
| Strawberries | 32 | 0.67 g | 7.7 g | 2 g | 0.3 g |
| Watermelon | 30 | 0.61 g | 7.5 g | 0.4 g | 0.15 g |
| Cantaloupe | 34 | 0.84 g | 8.2 g | 0.9 g | 0.19 g |
| Lemon | 29 | 1.1 g | 9.3 g | 2.8 g | 0.3 g |
Quick answers
How many calories are in half a grapefruit?
Half of a medium grapefruit (128 g) has 41 calories. Half of a large one (166 g) has 53 calories, and half of a small one (100 g) has 32 calories.
How much sugar is in a grapefruit?
The amount of sugar depends on the size. Half of a medium grapefruit contains 9 grams of total sugars. One cup of grapefruit sections with juice has about 16 grams of sugar.
How much fiber is in a grapefruit?
Half of a medium grapefruit (128 g) provides 1.4 grams of dietary fiber. A cup of sections with juice (230 g) contains 2.5 grams of fiber.
When to talk to a doctor or dietitian
- Grapefruit and its juice can interact with a number of prescription medicines. Ask your pharmacist or doctor whether any of yours are affected.
- This page describes nutrient content, not medical advice. If a health condition, medicine or pregnancy affects what you eat, a doctor or registered dietitian can tell you how grapefruit fits your situation.
Last updated October 21, 2026