113 %
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 lemon juice?
17.5kcal
in a 250 g glass
7 kcal per 100 g.
Source: UK CoFID 2021, record 14-277. Checked 5 October 2026.
0.75 gProtein
0.25 gFibre
113 %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.
- 0.75 gProtein
- 4 gCarbohydrate
- 0.25 gFibre
- 229 gWater
- 16.5 gMinerals and the rest
Below average for drinks
Lemon juice is 7 kcal per 100 g. The 61 drinks in this database average 69.2.
Lemon juice7
Drinks average69.2
Low in sugar, almost no salt
Low sugars and very low salt by UK labelling rules, per 100 g.
Sugars, per glass4 g
Salt, per glass0.01 g
Vitamins and minerals in lemon juice
One of the 19 reach the “high in” level: vitamin C.
Only a trace
- Zinc
- Manganese
None recorded
- Vitamin D
- Vitamin B12
Show all 19 with amounts
Vitamin C90 mg, 113 %
Folate0.0325 mg, 16 %
Potassium325 mg, 16 %
Vitamin B60.13 mg, 8.9 %
Copper0.08 mg, 7.5 %
Thiamin (vitamin B1)0.08 mg, 6.8 %
Magnesium17.5 mg, 4.7 %
Selenium0.0025 mg, 4.5 %
Pantothenic acid (vitamin B5)0.25 mg, 4.2 %
Phosphorus20 mg, 2.9 %
Calcium17.5 mg, 2.2 %
Riboflavin (vitamin B2)0.03 mg, 1.8 %
Iron0.25 mg, 1.8 %
Niacin (vitamin B3)0.25 mg, 1.6 %
Biotin0.00075 mg, 1.5 %
Chloride7.5 mg, 0.9 %
Vitamin A0.005 mg, 0.6 %
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 lemon 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 lemon juice
Find it inBloater, grilled500 % per 100 g
Zinc
Tracein lemon juice
Find it inOysters, raw592 % per 100 g
Selenium
1.8%in lemon 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 %
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Made in Cambridgeshire
Made in the UK since 1998, with every nutrient and its declared amount listed on the label.
Lemon juice against other drinks
Per 100 g, milk shake (powder) has the most vitamin C in this comparison, followed by apple juice concentrate (unsweetened, commerical).
67mg
49mg
38mg
36mg
11mg
10mg
Milk shake, powder+31 mg
Lime juice, fresh+2 mg
Lemon juice, freshthis page
Barley water, undiluted−26 mg
All values per 100 g, from the same dataset. Differences are against lemon juice.
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Questions about lemon juice
The questions people ask about lemon juice, answered from the dataset.
How many calories are in a portion of lemon juice?
A typical portion (250 ml, a glass) gives 18 kcal. Per 100 g the figure is 7 kcal.
Is lemon juice high in vitamin C?
Yes. Lemon juice, fresh has 36 mg vitamin C per 100 g, 45 % of the NRV, above the 15 % threshold for a “high in” claim.
Which vitamins and minerals does lemon juice have most of?
By share of the daily reference intake: vitamin C (36 mg, 45 %), folate (0.013 mg, 6.5 %) and potassium (130 mg, 6.5 %) per 100 g.
Is lemon juice a good source of protein?
Lemon juice, fresh has 0.3 g protein per 100 g, 16 % of the energy, which meets the UK threshold for “source of protein”.
How these numbers were made
Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 14-277, Lemon juice, fresh, published by Public Health England under the Open Government Licence v3.0. Main data references: Reviewed 2013. MW4, 1978. 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. 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.
