46 %
Vitamin B6 contributes to the normal function of the immune system, to normal psychological function and to the reduction of tiredness and fatigue.
How many calories are in cornflakes breakfast cereal?
140kcal
in a 40 g bowl
350 kcal per 100 g.
Source: UK CoFID 2021, record 11-749, 10 analysed samples. Checked 5 October 2026.
0.2 gFat
1.9 gProtein
0.8 gFibre
46 %Daily vitamin B6
What’s in a 40 g bowl
More than half of a bowl is carbohydrate. Sugars make up 15.3 g of that.
- 0.2 gFat
- 1.9 gProtein
- 34.8 gCarbohydrate
- 0.8 gFibre
- 1.2 gWater
- 1.1 gMinerals and the rest
About average for breakfast cereals
Cornflakes breakfast cereal is 350 kcal per 100 g. The 24 breakfast cereals in this database average 304.
Cornflakes breakfast cereal350
Breakfast cereals average304
High in sugar
38.3 g of sugars per 100 g, which is red on a UK traffic-light label (the line is 22.5 g).
Sugars, per bowl15.3 g
Salt, per bowl0.3 g
Vitamins and minerals in cornflakes breakfast cereal
Nine of the 20 recorded reach the “high in” level. Vitamin B6 leads by a long way.
Show all 20 with amounts
Vitamin B60.64 mg, 46 %
Thiamin (vitamin B1)0.48 mg, 44 %
Niacin (vitamin B3)6.6 mg, 42 %
Riboflavin (vitamin B2)0.56 mg, 40 %
Vitamin D0.00188 mg, 38 %
Iron4.8 mg, 34 %
Vitamin B120.00068 mg, 27 %
Chloride188 mg, 24 %
Calcium182 mg, 23 %
Selenium0.002 mg, 3.6 %
Iodine0.0036 mg, 2.4 %
Phosphorus13.2 mg, 1.9 %
Biotin0.0008 mg, 1.6 %
Manganese0.03 mg, 1.4 %
Potassium23.6 mg, 1.2 %
Vitamin A0.0084 mg, 1.1 %
Magnesium3.6 mg, 1 %
Vitamin E0.06 mg, <1 %
Zinc0.04 mg, <1 %
Vitamin Cnone 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 cornflakes breakfast cereal doesn’t give you. And where to find it.
No recorded vitamin C or copper, and only 1 % of the zinc reference intake per 100 g.
Vitamin C
0mgin cornflakes breakfast cereal
Find it inCherries, West Indian2150 % per 100 g
Zinc
1%in cornflakes breakfast cereal, per 100 g
Find it inOysters, raw592 % per 100 g
Copper
Tracein cornflakes breakfast cereal
Find it inLiver, calf, fried2386 % per 100 g
100 mgVitamin C, 125 %
0.075 mgSelenium, 136 %
0.00125 mgVitamin D, 25 %
Or one scoop of Immufix
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Made in Cambridgeshire
Made in the UK since 1998, with every nutrient and its declared amount listed on the label.
Cornflakes breakfast cereal against other breakfast cereals
Cornflakes breakfast cereal comes second for vitamin B6 here, just behind breakfast cereal (malted flake, fortified).
2.1mg
1.6mg
1.4mg
1.3mg
1.2mg
1.1mg
Breakfast cereal, cornflakes, frosted, fortifiedthis page
All values per 100 g, from the same dataset. Differences are against cornflakes breakfast cereal.
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Questions about cornflakes breakfast cereal
What the numbers say to the questions people actually search.
How many calories are in a portion of cornflakes breakfast cereal?
A typical portion (40 g, a bowl before milk) gives 140 kcal. Per 100 g the figure is 350 kcal.
Is cornflakes breakfast cereal high in vitamin B6?
Yes. Breakfast cereal, cornflakes, frosted, fortified has 1.6 mg vitamin B6 per 100 g, 114 % of the NRV, above the 30 % threshold for a “high in” claim.
Which vitamins and minerals does cornflakes breakfast cereal have most of?
By share of the daily reference intake: vitamin B6 (1.6 mg, 114 %), thiamin (1.2 mg, 109 %) and niacin (16.6 mg, 104 %) per 100 g.
What counts as a portion of cornflakes breakfast cereal?
This page uses 40 g, a bowl before milk, the usual UK portion for breakfast cereals. Every “per portion” figure is the per-100 g value scaled to that weight.
How these numbers were made
Every figure comes from the UK Composition of Foods Integrated Dataset (CoFID), 2021 edition, record 11-749, Breakfast cereal, cornflakes, frosted, fortified, 10 analysed samples, published by Public Health England under the Open Government Licence v3.0. Main data references: LGC, Nutrient survey of breakfast cereals, 2004; and industry data, 2013. Values are per 100 g of the edible part; a bowl is 40 g, a bowl before milk, the usual UK portion for breakfast cereals. 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 24 breakfast cereals 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: Corn). Checked 5 October 2026. Contains public sector information licensed under the Open Government Licence v3.0.
More breakfast cereals
From the same group, with calories per 100 g, and the foods with the most vitamin B6.
More breakfast cereals
- Breakfast cereal, multigrain hoops, fortified368 kcal
- Breakfast cereal, puffed wheat, honey coated, fortified355 kcal
- Muesli, Swiss style, unfortified366 kcal
- Porridge112 kcal
- Breakfast cereal, crunchy clusters type, without nuts, unfortified399 kcal
- Breakfast cereal, instant hot oat, plain, raw, fortified352 kcal
- All 24 breakfast cereals