Calories in half a pink grapefruit, a whole one and a glass of juice
Half a pink grapefruit has 52 calories
Half a pink grapefruit has 52 calories, and the whole fruit has 103. USDA's grapefruit is just under 4 inches across, and half of it weighs 123 g.
USDA doesn't publish a large grapefruit. If yours is bigger than that, weigh the half you eat and count 42 calories for every 100 g, or let the calculator further down do it.
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. Source checked September 29, 2026.
Halves, sections and juice
A cup of pink grapefruit sections with their juice is 230 g and 97 calories. A cup of pink grapefruit juice lands at almost the same number, 96 calories for 247 g. USDA's juice record has no fiber or sugar value, so the table marks both as not reported.
| Portion | Weight | Calories kcal | Protein g | Carbs g | Fat g | Fiber g | Sugar g | Sodium mg | Caffeine mg | Portion source |
|---|---|---|---|---|---|---|---|---|---|---|
| Half a pink grapefruit | 123 g | 52 | 0.9 | 13.1 | 0.2 | 2 | 8.5 | 0 | 0 | USDA portion, half a fruit, 3 3/4 inches across |
| A whole pink grapefruit | 246 g | 103 | 1.9 | 26.2 | 0.3 | 3.9 | 16.9 | 0 | 0 | 1 fruit, computed from USDA's half a fruit, 3 3/4 inches across |
| 1 cup pink grapefruit sections with juice | 230 g | 97 | 1.8 | 24.5 | 0.3 | 3.7 | 15.8 | 0 | 0 | USDA portion, 1 cup of sections, with juice |
| Half a white grapefruit | 118 g | 39 | 0.8 | 9.9 | 0.1 | 1.3 | 8.6 | 0 | 0 | USDA portion, half a fruit, 3 3/4 inches across |
| 1 cup pink grapefruit juice | 247 g | 96 | 1.2 | 22.7 | 0.2 | Not reported | Not reported | 2.5 | Not reported | USDA portion, 1 cup |
| 1 cup canned sections in juice | 249 g | 92 | 1.7 | 22.9 | 0.2 | 1 | 21.9 | 17.4 | 0 | USDA portion, 1 cup |
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. USDA FoodData Central. Grapefruit juice, pink, raw. Source checked September 29, 2026.
Carbs and fiber in half a grapefruit
Half a pink grapefruit has 13.1 g of carbs, and 8.5 g of those are sugar. It also has 2 g of fiber, 0.9 g of protein and 0.2 g of fat.
Weighing it against other citrus? Oranges have their own page, and more fruit is in the full list of calorie references.
| Nutrient | Half a pink grapefruit | Per 100 g |
|---|---|---|
| Calories | 52 kcal | 42 kcal |
| Protein | 0.9 g | 0.8 g |
| Carbs | 13.1 g | 10.7 g |
| Fat | 0.2 g | 0.1 g |
| Fiber | 2 g | 1.6 g |
| Sugar | 8.5 g | 6.9 g |
| Sodium | 0 mg | 0 mg |
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. Source checked September 29, 2026.
Pink, white, juice or canned
White grapefruit has 33 calories per 100 g against 42 for pink and red. USDA's half of a white grapefruit weighs 118 g and has 39 calories.
Canned sections packed in juice have 37 calories per 100 g, counting the juice in the can. Pink grapefruit juice has 39.
| Preparation | Weight | Calories kcal | Protein g | Carbs g | Fat g | Fiber g | Sugar g | Sodium mg | Caffeine mg |
|---|---|---|---|---|---|---|---|---|---|
| Pink and red grapefruit, raw | 100 g | 42 | 0.8 | 10.7 | 0.1 | 1.6 | 6.9 | 0 | 0 |
| White grapefruit, raw | 100 g | 33 | 0.7 | 8.4 | 0.1 | 1.1 | 7.3 | 0 | 0 |
| Pink grapefruit juice, raw | 100 g | 39 | 0.5 | 9.2 | 0.1 | Not reported | Not reported | 1 | Not reported |
| Canned sections packed in juice, with the juice | 100 g | 37 | 0.7 | 9.2 | 0.1 | 0.4 | 8.8 | 7 | 0 |
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. USDA FoodData Central. Grapefruit, raw, white, all areas. USDA FoodData Central. Grapefruit juice, pink, raw. USDA FoodData Central. Grapefruit, sections, canned, juice pack, solids and liquids. Source checked September 29, 2026.
Weigh a grapefruit that's bigger than USDA's
Scoop out the half you're eating, or weigh the peeled sections, and enter the grams. The calculator uses raw pink grapefruit.
Had it with breakfast and skipped the scale? Tell TrueCal it was half a pink grapefruit and look over its estimate.
123 g has about 51.7 calories.
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. Source checked September 29, 2026.
How many calories are in a whole grapefruit?
A whole pink grapefruit the size USDA lists is 246 g and 103 calories. That's two of USDA's halves put together.
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. Source checked September 29, 2026.
Does pink grapefruit have more calories than white?
Yes, a little. Pink and red grapefruit has 42 calories per 100 g and white has 33. Half a pink grapefruit is 52 calories, and half a white one is 39.
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. USDA FoodData Central. Grapefruit, raw, white, all areas. Source checked September 29, 2026.
Log the portion you ate
Add food from a photo or a sentence, then check the portion before saving.
USDA FoodData Central. Grapefruit, raw, pink and red, all areas. USDA FoodData Central. Grapefruit, raw, white, all areas. USDA FoodData Central. Grapefruit juice, pink, raw. USDA FoodData Central. Grapefruit, sections, canned, juice pack, solids and liquids. Source checked September 29, 2026.