Grapefruit nutrition facts

Grapefruit (0.5 fruit (3-3/4" dia), 123 g) has 52 calories, 0.9 g protein, 2 g fiber, 0.2 g fat. It is an excellent source of vitamin C (43% DV).

Vitamin C 43% DV Vitamin A 7.9% DV Fiber 7% DVPantothenic acid 6.4% DVThiamin 4.4% DV

#6 of 15 foods for lycopene #6 of 42 fruits for beta-carotene #9 of 42 fruits for vitamin A #14 of 50 fruits for calcium #18 of 50 fruits for thiamin #19 of 50 fruits for folate

Nutrition Facts

Serving size0.5 fruit (3-3/4" dia) (123 g)

Calories52

Total Fat 0.2g0.2%

Saturated Fat 0g0.1%

Trans Fat 0g

Cholesterol 0mg0%

Sodium 0mg0%

Total Carbohydrate 13.1g4.8%

Dietary Fiber 2g7%

Total Sugars 8.5g

Protein 0.9g1.9%

Vitamin D 0µg0%

Calcium 27mg2.1%

Iron 0.1mg0.5%

Potassium 166mg3.5%

* The % Daily Value (DV) tells you how much a nutrient in a serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice. Values from USDA FoodData Central; label rounding rules are not applied.

Calorie breakdown

■ Protein 7%
■ Fat 3%
■ Carbohydrate 91%

Share of calories by the 4-9-4 Atwater factors; the centre shows USDA's calorie value.

Scores

101

Nutrient density (NRF9.3)

Nine nutrients to encourage minus three to limit, per 100 kcal. Whole foods range from about −60 to 600; leafy greens score highest.

-1.4

Inflammatory profile strongly anti-inflammatory

Lower is more anti-inflammatory. Percentile 13 among 1,677 whole foods, from Dietary Inflammatory Index weights applied to this food's nutrients per 100 kcal.

All nutrients in grapefruit

Nutrient	Per 0.5 fruit (3-3/4" dia)	% Daily Value
Macronutrients
Calories	52 kcal	2.6%
Protein	0.9 g	1.9%
Total fat	0.2 g	0.2%
Carbohydrate	13.1 g	4.8%
Fiber	2 g	7%
Sugars	8.5 g	no DV
Fats
Saturated fat	0 g	0.1%
Trans fat	0 g	no DV
Monounsaturated fat	0 g	no DV
Polyunsaturated fat	0 g	no DV
Omega-3 (ALA+EPA+DHA)	0.01 g	no DV
Omega-6 (linoleic)	0.04 g	no DV
Cholesterol	0 mg	0%
Vitamins
Vitamin C	38.4 mg	43%
Thiamin (B1)	0.05 mg	4.4%
Riboflavin (B2)	0.04 mg	2.9%
Niacin (B3)	0.3 mg	1.6%
Pantothenic acid (B5)	0.32 mg	6.4%
Vitamin B6	0.07 mg	3.8%
Folate (DFE)	16 µg	4%
Vitamin B12	0 µg	0%
Vitamin A (RAE)	71 µg	7.9%
Vitamin E	0.16 mg	1.1%
Vitamin D	0 µg	0%
Vitamin K	0 µg	0%
Choline	9 mg	1.7%
Minerals
Sodium	0 mg	0%
Calcium	27 mg	2.1%
Iron	0.1 mg	0.5%
Magnesium	11 mg	2.6%
Phosphorus	22 mg	1.8%
Potassium	166 mg	3.5%
Zinc	0.1 mg	0.8%
Copper	0.04 mg	4.4%
Manganese	0.03 mg	1.2%
Selenium	0.1 µg	0.2%
Carotenoids
Beta-carotene	844 µg	no DV
Lycopene	1,745 µg	no DV
Lutein + zeaxanthin	6 µg	no DV
Other
Caffeine	0 mg	no DV
Water	108 g	no DV
Amino acids
Tryptophan	0.01 g	no DV
Threonine	0.016 g	no DV
Isoleucine	0.01 g	no DV
Leucine	0.018 g	no DV
Lysine	0.023 g	no DV
Methionine	0.009 g	no DV
Phenylalanine	0.016 g	no DV
Valine	0.018 g	no DV
Histidine	0.01 g	no DV

Nutrient	Per 100 g	% Daily Value
Macronutrients
Calories	42 kcal	2.1%
Protein	0.8 g	1.5%
Total fat	0.1 g	0.2%
Carbohydrate	10.7 g	3.9%
Fiber	1.6 g	5.7%
Sugars	6.9 g	no DV
Fats
Saturated fat	0 g	0.1%
Trans fat	0 g	no DV
Monounsaturated fat	0 g	no DV
Polyunsaturated fat	0 g	no DV
Omega-3 (ALA+EPA+DHA)	0.01 g	no DV
Omega-6 (linoleic)	0.03 g	no DV
Cholesterol	0 mg	0%
Vitamins
Vitamin C	31.2 mg	35%
Thiamin (B1)	0.04 mg	3.6%
Riboflavin (B2)	0.03 mg	2.4%
Niacin (B3)	0.2 mg	1.3%
Pantothenic acid (B5)	0.26 mg	5.2%
Vitamin B6	0.05 mg	3.1%
Folate (DFE)	13 µg	3.2%
Vitamin B12	0 µg	0%
Vitamin A (RAE)	58 µg	6.4%
Vitamin E	0.13 mg	0.9%
Vitamin D	0 µg	0%
Vitamin K	0 µg	0%
Choline	8 mg	1.4%
Minerals
Sodium	0 mg	0%
Calcium	22 mg	1.7%
Iron	0.1 mg	0.4%
Magnesium	9 mg	2.1%
Phosphorus	18 mg	1.4%
Potassium	135 mg	2.9%
Zinc	0.1 mg	0.6%
Copper	0.03 mg	3.6%
Manganese	0.02 mg	1%
Selenium	0.1 µg	0.2%
Carotenoids
Beta-carotene	686 µg	no DV
Lycopene	1,419 µg	no DV
Lutein + zeaxanthin	5 µg	no DV
Other
Caffeine	0 mg	no DV
Water	88 g	no DV
Amino acids
Tryptophan	0.008 g	no DV
Threonine	0.013 g	no DV
Isoleucine	0.008 g	no DV
Leucine	0.015 g	no DV
Lysine	0.019 g	no DV
Methionine	0.007 g	no DV
Phenylalanine	0.013 g	no DV
Valine	0.015 g	no DV
Histidine	0.008 g	no DV

Nutrient	Per 1 oz (28 g)	% Daily Value
Macronutrients
Calories	12 kcal	0.6%
Protein	0.2 g	0.4%
Total fat	0 g	0.1%
Carbohydrate	3 g	1.1%
Fiber	0.5 g	1.6%
Sugars	2 g	no DV
Fats
Saturated fat	0 g	0%
Trans fat	0 g	no DV
Monounsaturated fat	0 g	no DV
Polyunsaturated fat	0 g	no DV
Omega-3 (ALA+EPA+DHA)	0 g	no DV
Omega-6 (linoleic)	0.01 g	no DV
Cholesterol	0 mg	0%
Vitamins
Vitamin C	8.8 mg	9.8%
Thiamin (B1)	0.01 mg	1%
Riboflavin (B2)	0.01 mg	0.7%
Niacin (B3)	0.1 mg	0.4%
Pantothenic acid (B5)	0.07 mg	1.5%
Vitamin B6	0.02 mg	0.9%
Folate (DFE)	4 µg	0.9%
Vitamin B12	0 µg	0%
Vitamin A (RAE)	16 µg	1.8%
Vitamin E	0.04 mg	0.2%
Vitamin D	0 µg	0%
Vitamin K	0 µg	0%
Choline	2 mg	0.4%
Minerals
Sodium	0 mg	0%
Calcium	6 mg	0.5%
Iron	0 mg	0.1%
Magnesium	3 mg	0.6%
Phosphorus	5 mg	0.4%
Potassium	38 mg	0.8%
Zinc	0 mg	0.2%
Copper	0.01 mg	1%
Manganese	0.01 mg	0.3%
Selenium	0 µg	0.1%
Carotenoids
Beta-carotene	194 µg	no DV
Lycopene	402 µg	no DV
Lutein + zeaxanthin	1 µg	no DV
Other
Caffeine	0 mg	no DV
Water	25 g	no DV
Amino acids
Tryptophan	0.002 g	no DV
Threonine	0.004 g	no DV
Isoleucine	0.002 g	no DV
Leucine	0.004 g	no DV
Lysine	0.005 g	no DV
Methionine	0.002 g	no DV
Phenylalanine	0.004 g	no DV
Valine	0.004 g	no DV
Histidine	0.002 g	no DV

Missing nutrients were not analysed by USDA for this food; they are not zero. F marks a value updated from Foundation Foods (April 2026 analytical data). Source: USDA FoodData Central #174673 ("Grapefruit, raw, pink and red, all areas").

Compare grapefruit with…

Grapefruit vs Orange

Frequently asked questions

How many calories are in grapefruit?

Grapefruit has 52 calories per 0.5 fruit (3-3/4" dia) (123 g), or 42 calories per 100 g, according to USDA FoodData Central.

How much protein is in grapefruit?

0.9 g of protein per 0.5 fruit (3-3/4" dia), which is 1.9% of the 50 g Daily Value.

What is grapefruit rich in?

Per serving, grapefruit is richest in Vitamin C at 43% of the Daily Value, Vitamin A (RAE) (7.9%), Fiber (7%), Pantothenic acid (B5) (6.4%).

Is grapefruit healthy?

By nutrient density, grapefruit scores 101 on the NRF9.3 index (nine nutrients to encourage minus three to limit, per 100 kcal). Its nutrient profile is strongly anti-inflammatory compared with other whole foods. See the methodology page for how both scores work; this is data, not medical advice.

More fruits

Nutrient values are from USDA FoodData Central (SR Legacy, April 2018; Foundation Foods, April 2026) and shown per serving as described on each page. %DV uses the FDA Daily Values for adults and children aged 4 and over. This is nutrition data for general information, not medical or dietary advice; talk to a clinician or registered dietitian about your own needs. How the numbers are calculated.