64 %
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 tomatoes?
285kcal
in a 300 g serving
95 kcal per 100 g.
Source: UK CoFID 2021, record 15-889. Checked 5 October 2026.
18 gFat
5.1 gProtein
7.8 gFibre
64 %Daily vitamin C
What’s in a 300 g serving
More than half of a serving is water, which is why the calories stay low. What is left is mostly carbohydrate.
- 18 gFat
- 5.1 gProtein
- 26.7 gCarbohydrate
- 7.8 gFibre
- 237 gWater
- 5.4 gMinerals and the rest
Below average for dishes
Tomatoes are 95 kcal per 100 g. The 603 dishes in this database average 180.
Tomatoes95
Dishes average180
Protein and fibre in a serving
5.1 g of protein and 7.8 g of fibre, neither at a claim threshold.
Protein, per serving5.1 g
Fibre, per serving7.8 g
Vitamins and minerals in tomatoes
Four of the 20 reach the “source of” level, vitamin C first; none reaches “high in”.
Only a trace
- Vitamin B12
None recorded
- Vitamin D
Show all 20 with amounts
Vitamin C51 mg, 64 %
Potassium1215 mg, 61 %
Chloride453 mg, 57 %
Vitamin E6.4 mg, 54 %
Vitamin B60.6 mg, 43 %
Niacin (vitamin B3)5.4 mg, 34 %
Copper0.33 mg, 33 %
Thiamin (vitamin B1)0.36 mg, 33 %
Folate0.063 mg, 32 %
Manganese0.6 mg, 30 %
Pantothenic acid (vitamin B5)1.7 mg, 28 %
Phosphorus180 mg, 26 %
Selenium0.009 mg, 16 %
Magnesium54 mg, 14 %
Riboflavin (vitamin B2)0.18 mg, 13 %
Iron1.7 mg, 12 %
Zinc0.9 mg, 9 %
Calcium51 mg, 6.4 %
Vitamin A0.027 mg, 3.4 %
Vitamin Dnone recorded
Badges use the UK legal thresholds per 100 g: 15 % of the reference intake for “source of”, 30 % for “high in”. A trace is shown as “trace” and never counts.
What tomatoes don’t give you. And where to find it.
No recorded vitamin D or vitamin B12, and only 3 % of the zinc reference intake per 100 g.
Vitamin D
0mgin tomatoes
Find it inBloater, grilled500 % per 100 g
Zinc
3%in tomatoes, per 100 g
Find it inOysters, raw592 % per 100 g
Vitamin B12
Tracein tomatoes
Find it inLiver, ox, raw4400 % per 100 g
100 mgVitamin C, 125 %
0.075 mgSelenium, 136 %
0.00125 mgVitamin D, 25 %
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Tomatoes against other dishes
Per 100 g, tomatoes have the most vitamin C of the 6 here, ahead of bhaji (cauliflower, potato and pea, with butter).
17mg
17mg
7mg
7mg
6mg
6mg
All values per 100 g, from the same dataset. Differences are against tomatoes.
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Questions about tomatoes
What the numbers say to the questions people actually search.
How many calories are in a portion of tomatoes?
A typical portion (300 g, one serving) gives 285 kcal. Per 100 g the figure is 95 kcal.
Is tomatoes a source of vitamin C?
It is a source of vitamin C: 17 mg per 100 g, 21 % of the NRV, which passes the 15 % threshold for “source of” but not the 30 % needed for “high in”.
Which vitamins and minerals do tomatoes have most of?
By share of the daily reference intake: vitamin C (17 mg, 21 %), potassium (405 mg, 20 %) and chloride (151 mg, 19 %) per 100 g.
Are tomatoes high in salt?
No. Salt is 0.01 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 15-889, Tomatoes, stuffed with vegetables, published by Public Health England under the Open Government Licence v3.0. Main data references: Updated 2014. Values are per 100 g of the edible part; a serving is 300 g, one serving, the usual UK portion for dishes. 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. 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 603 dishes 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: Tomato). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
More dishes
From the same group, with calories per 100 g, and the foods with the most vitamin C.
