How many calories are in Grapefruit, Raw?

A 100 g serving of Grapefruit, Raw has 37 kcal. The calories in your portion depend on its weight and how it is prepared.

How much protein is in Grapefruit, Raw?

Per 100 g there are 0.9 g of protein — about 2% of the Daily Value (50 g).

How much fat and carbs are in Grapefruit, Raw?

Per 100 g there are 0.1 g of fat and 9.1 g of carbohydrate.

What nutrients is Grapefruit, Raw high in?

Per 100 g it notably contributes to your Daily Value for: Vitamin C (37% DV).

Fruits & Berries

Grapefruit, Raw

USDA reference values for grapefruit, raw (per 100 g).

37kcalCalories

0.9gProtein

0.1gFat

9.1gCarbs

Protein, fat and carb balance

Share of calories from each macronutrient (per 100 g).

Protein 8.6%
Fat 2.2%
Carbs 89.2%

What this food is high in

37% Vitamin C 33.3 mg / 100 g

Shown as percent of the Daily Value per 100 g.

Full nutrition facts (per 100 g)

Nutrient	Per 100 g	% DV*
Macronutrients
Protein	0.9 g	2%
Total Fat	0.1 g	<1%
Saturated Fat	0 g	<1%
Carbohydrate	9.1 g	3%
Dietary Fiber	—
Total Sugars	—
Minerals
Sodium	0 mg	0%
Potassium	143 mg	3%
Calcium	12 mg	<1%
Iron	0.1 mg	<1%
Magnesium	9 mg	2%
Vitamins
Vitamin C	33.3 mg	37%
Vitamin A	0 mcg	0%
Vitamin D	0 mcg	0%
Other
Cholesterol	0 mg	0%

* Percent of the Daily Value (Daily Value, based on a 2,000 kcal diet).

Data source: USDA FoodData Central. Values are per 100 g of edible portion and are reference figures — they vary by variety, preparation and brand. Last updated: 2026-04-30.

Frequently asked questions

How many calories are in Grapefruit, Raw?: A 100 g serving of Grapefruit, Raw has 37 kcal. The calories in your portion depend on its weight and how it is prepared.
How much protein is in Grapefruit, Raw?: Per 100 g there are 0.9 g of protein — about 2% of the Daily Value (50 g).
How much fat and carbs are in Grapefruit, Raw?: Per 100 g there are 0.1 g of fat and 9.1 g of carbohydrate.
What nutrients is Grapefruit, Raw high in?: Per 100 g it notably contributes to your Daily Value for: Vitamin C (37% DV).

Similar foods and comparisons

Abiyuch, Raw 69 kcal 1.5 g protein Acerola Juice, Raw 23 kcal 0.4 g protein Acerola, (West Indian Cherry) 32 kcal 0.4 g protein Apple Juice, Canned Or Bottled 46 kcal 0.1 g protein Apple Juice, Canned Or Bottled 48 kcal 0.1 g protein Apple Juice, Canned Or Bottled 46 kcal 0.1 g protein

Compare Grapefruit, Raw with: Abiyuch, Raw Acerola Juice, Raw Acerola, (West Indian Cherry) Apple Juice, Canned Or Bottled

Note. This information is provided for general reference only and is not medical advice or a diet prescription. If you have a medical condition or special dietary needs, consult a physician or a registered dietitian.