1/2 Cup of Grapefruit in Grams

1/2 cup of grapefruit weighs 90 grams, or 3.2 oz.

This is the USDA household measure for grapefruit. That amount has 38 calories. Packing, chopping and moisture change how much fits in a cup, so a kitchen scale gives the most accurate count.

Grapefruit Calorie Calculator

AmountUnit

38cal

in 1/2 cup of grapefruit (90 g)

Protein0.7 g7% of calories

Fat0.1 g3% of calories

Carbs9.6 g91% of calories

2% of a 2,000 calorie day

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Grapefruit cups to grams

Amount	Grams	Ounces	Calories
1/4 cup	45 g	1.6 oz	19
1/3 cup	60 g	2.1 oz	25
1/2 cup	90 g	3.2 oz	38
2/3 cup	120 g	4.2 oz	50
3/4 cup	135 g	4.8 oz	57
1 cup	180 g	6.3 oz	76
1 1/2 cups	270 g	9.5 oz	113
2 cups	360 g	13 oz	151
3 cups	540 g	19 oz	227
4 cups	720 g	25 oz	302

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
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.

Avocado160

Banana97

Mandarin Orange62

Apple61

Tangerine53

Grapefruit42

Canned Grapefruit36

Grapefruit: common questions

How many grams are in 1/2 cup of grapefruit?

1/2 cup of grapefruit is about 90 g.

How many calories are in 1/2 cup of grapefruit?

1/2 cup of grapefruit has 38 calories.

How many cups is 100 g of grapefruit?

100 g of grapefruit is about 1/2 cup.

More about grapefruit

Source: USDA FoodData Central, FNDDS 2021-2023. FDC ID 2709165. Original description: Grapefruit, raw. Portion weights are USDA household measures.