97 %
Vitamin C contributes to the normal function of the immune system, to the reduction of tiredness and fatigue, and to normal collagen formation.
How many calories are in grapefruit juice?
82.5kcal
in a 250 g glass
33 kcal per 100 g.
Source: UK CoFID 2021, record 14-275, 50 analysed samples. Checked 5 October 2026.
0.25 gFat
1 gProtein
20.8 gCarbohydrate
97 %Daily vitamin C
What’s in a 250 g glass
More than half of a glass is water, which is why the calories stay low. What is left is mostly carbohydrate.
- 0.25 gFat
- 1 gProtein
- 20.8 gCarbohydrate
- 224 gWater
- 4.5 gMinerals and the rest
Below average for drinks
Grapefruit juice is 33 kcal per 100 g. The 61 drinks in this database average 69.2.
Grapefruit juice33
Drinks average69.2
Low in fat
0.1 g of fat per 100 g; the UK “low fat” line is 1.5 g.
Fat, per glass0.25 g
Vitamins and minerals in grapefruit juice
One of the 20 reach the “high in” level: vitamin C.
Only a trace
- Vitamin A
- Zinc
- Fibre
None recorded
- Vitamin D
- Vitamin B12
Show all 20 with amounts
Vitamin C77.5 mg, 97 %
Manganese0.5 mg, 25 %
Potassium250 mg, 13 %
Thiamin (vitamin B1)0.1 mg, 9.1 %
Folate0.015 mg, 7.5 %
Magnesium20 mg, 5.3 %
Biotin0.0025 mg, 5 %
Selenium0.0025 mg, 4.5 %
Calcium35 mg, 4.4 %
Vitamin E0.48 mg, 4 %
Phosphorus27.5 mg, 3.9 %
Vitamin B60.05 mg, 3.6 %
Iron0.5 mg, 3.6 %
Pantothenic acid (vitamin B5)0.2 mg, 3.3 %
Niacin (vitamin B3)0.5 mg, 3.1 %
Copper0.03 mg, 2.5 %
Riboflavin (vitamin B2)0.03 mg, 1.8 %
Chloride10 mg, 1.3 %
Vitamin Dnone recorded
Vitamin B12none recorded
Badges use the UK legal thresholds per 100 g: 7.5 % of the reference intake for “source of”, 15 % for “high in”. A trace is shown as “trace” and never counts.
What grapefruit juice doesn’t give you. And where to find it.
No recorded vitamin D or zinc, and only 1.8 % of the selenium reference intake per 100 g.
Vitamin D
0mgin grapefruit juice
Find it inBloater, grilled500 % per 100 g
Zinc
Tracein grapefruit juice
Find it inOysters, raw592 % per 100 g
Selenium
1.8%in grapefruit juice, per 100 g
Find it inKidney, pig, fried491 % per 100 g
100 mgVitamin C, 125 %
0.075 mgSelenium, 136 %
0.00125 mgVitamin D, 25 %
Or one scoop of Immufix
Every 25 g scoop declares 100 mg of vitamin C, 0.00125 mg of vitamin D and 0.075 mg of selenium, alongside other vitamins and minerals. Vitamin C, vitamin D and selenium contribute to the normal function of the immune system.
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Free standard delivery to UK addresses. Royal Mail 48 tracked, usually 2 to 3 working days.
Made in Cambridgeshire
Made in the UK since 1998, with every nutrient and its declared amount listed on the label.
Grapefruit juice against other drinks
Grapefruit juice comes second for vitamin C here, just behind milk shake (powder).
67mg
31mg
30mg
11mg
10mg
8mg
Milk shake, powder+36 mg
Grapefruit juice, unsweetenedthis page
Barley water, undiluted−21 mg
Tomato juice−23 mg
All values per 100 g, from the same dataset. Differences are against grapefruit juice.
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Questions about grapefruit juice
What the numbers say to the questions people actually search.
How many calories are in a portion of grapefruit juice?
A typical portion (250 ml, a glass) gives 83 kcal. Per 100 g the figure is 33 kcal.
Is grapefruit juice high in vitamin C?
Yes. Grapefruit juice, unsweetened has 31 mg vitamin C per 100 g, 39 % of the NRV, above the 15 % threshold for a “high in” claim.
Which vitamins and minerals does grapefruit juice have most of?
By share of the daily reference intake: vitamin C (31 mg, 39 %), manganese (0.2 mg, 10 %) and potassium (100 mg, 5 %) per 100 g.
Is grapefruit juice high in salt?
No. Salt is 0.02 g per 100 g, which is very low under UK rules.
How these numbers were made
Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 14-275, Grapefruit juice, unsweetened, 50 analysed samples, published by Public Health England under the Open Government Licence v3.0. Main data references: Reviewed 2013. LGC, Fruit and vegetables, 1989-1990. Values are per 100 g of the edible part; a glass is 250 g, a glass, the usual UK portion for drinks. Reference intakes follow Regulation (EU) 1169/2011 Annex XIII as retained in GB law; “source of”, “high in” and “low” follow Regulation (EC) 1924/2006, assessed per 100 g (per 100 ml thresholds for drinks). Function lines are the authorised wording from the GB register of nutrition and health claims, credited to the nutrient. Energy is rounded to the whole kcal and kJ; other amounts to one decimal, or two below 1. A trace is shown as “trace” and never gets a figure or a badge; a nutrient never analysed is left off the page. We start from the dataset’s 2,887 records and keep 2,322: records weighed with bone, shell or skin, alcoholic drinks, infant foods, brand-named products, records with fewer than eight measured vitamins and minerals and near-identical variants are left out. Group context uses the 61 drinks kept from the dataset; a rank counts only the foods with a measured figure for that nutrient. Food images are illustrations from Ingredient Atlas, released under CC0; they show the food, not the measured sample, and where no illustration of the exact food exists the nearest one is shown (here: White Florida Grapefruit). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
More drinks
From the same group, with calories per 100 g, and the foods with the most vitamin C.
