Question 1

How many calories are in grapefruit?

Accepted Answer

One fruit (3-3/4" dia) (123 g) of grapefruit has about 37 calories. Per 100 g that is 30 calories. The figures are from the USDA FoodData Central database (lab-measured values).

Question 2

How much protein is in grapefruit?

Accepted Answer

One fruit (3-3/4" dia) (123 g) has 0.7 g of protein (0.6 g per 100 g). It is not a significant source of protein.

Question 3

How many carbs are in grapefruit?

Accepted Answer

One fruit (3-3/4" dia) (123 g) has 9.2 g of carbohydrate, of which 1.4 g is fibre.

Question 4

What vitamins and minerals does grapefruit contain?

Accepted Answer

Per fruit (3-3/4" dia) (123 g), the most notable are vitamin c (51% of the Daily Value). The tool above lists every vitamin and mineral the USDA measured, at any portion size.

Question 5

Where do these grapefruit nutrition numbers come from?

Accepted Answer

They come from the USDA FoodData Central database (SR Legacy), which is public domain, scaled to the portion shown. Brands and recipes vary, so treat them as typical values. Nothing you look up here is sent to a server.

Nutrient	1 fruit (3-3/4" dia) (123 g)	Per 100 g	% Daily Value
Calories	37 kcal	30 kcal	—
Protein	0.68 g	0.55 g	1%
Carbohydrate	9.2 g	7.5 g	3%
Fibre	1.4 g	1.1 g	5%
Fat	0.12 g	0.1 g	0%
Saturated fat	0.02 g	0.01 g	0%
Sodium	0 mg	0 mg	0%
Potassium	156 mg	127 mg	3%
Calcium	18 mg	15 mg	1%
Iron	0.15 mg	0.12 mg	1%
Vitamin C	46 mg	37 mg	51%

Grapefruit nutrition facts

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