Calories in 300g of Grapefruit
300g of grapefruit (300 g) has 126 calories. That is 6% of a 2,000 calorie diet.
The calories come from 2.3 g of protein, 0.4 g of fat and 32 g of carbohydrates, a split of 7% protein, 3% fat and 91% carbs. For comparison, 200g of grapefruit has 84 and 400g of grapefruit has 168 calories. Burning 126 calories takes about 23 minutes of brisk walking or 10 minutes of running for a 155 lb adult, based on Harvard Health Publishing activity estimates.
Grapefruit Calorie Calculator
Your meal
Add portions from any food page to build a meal total. It stays in this browser.
Grapefruit calories by serving size
Common amounts of grapefruit with calories and macros. Tap a row for its full nutrition page.
| Serving | Weight | Calories | Protein | Fat | Carbs |
|---|---|---|---|---|---|
| 1/2 cup | 90 g | 38 | 0.7 g | 0.1 g | 9.6 g |
| 100g | 100 g | 42 | 0.8 g | 0.1 g | 11 g |
| 1 half | 154 g | 65 | 1.2 g | 0.2 g | 16 g |
| 1 cup | 180 g | 76 | 1.4 g | 0.3 g | 19 g |
| 200g | 200 g | 84 | 1.5 g | 0.3 g | 21 g |
| 300g | 300 g | 126 | 2.3 g | 0.4 g | 32 g |
| 1 grapefruit | 308 g | 129 | 2.4 g | 0.4 g | 33 g |
| 2 halfs | 308 g | 129 | 2.4 g | 0.4 g | 33 g |
| 2 grapefruit | 616 g | 259 | 4.7 g | 0.9 g | 66 g |
Grapefruit vs similar foods
Calories per 100 g compared with other fruits.
Grapefruit: common questions
How many calories are in 300g of grapefruit?
300g of grapefruit weighs about 300 g and has 126 calories.
How much protein is in 300g of grapefruit?
300g of grapefruit has 2.3 g of protein, which is 5% of the 50 g Daily Value.
How many carbs are in 300g of grapefruit?
300g of grapefruit has 32 g of carbohydrates, including 4.8 g of fiber and 21 g of sugars.
How much grapefruit is 100 calories?
100 calories of grapefruit is 238 g, about 3/4 grapefruit.
More about grapefruit
Amount for a target
Weights and conversions
Compare with
Source: USDA FoodData Central, FNDDS 2021-2023. FDC ID 2709165. Original description: Grapefruit, raw. Portion weights are USDA household measures.