Calories in bananas: 81 kcal per 100 g

Q: How many calories are in a portion of bananas?

A typical portion (80 g, one of your five a day) gives 65 kcal. Per 100 g the figure is 81 kcal.

Q: Is bananas a source of vitamin B6?

It is a source of vitamin B6: 0.31 mg per 100 g, 22 % of the NRV, which passes the 15 % threshold for “source of” but not the 30 % needed for “high in”.

Q: Which vitamins and minerals do bananas have most of?

By share of the daily reference intake: vitamin B6 (0.31 mg, 22 %), manganese (0.36 mg, 18 %) and potassium (330 mg, 17 %) per 100 g.

Q: What counts as a portion of bananas?

This page uses 80 g, one of your five a day, the usual UK portion for fruit. Every “per portion” figure is the per-100 g value scaled to that weight.

What’s in an 80 g portion

More than half of a portion is water, which is why the calories stay low. What is left is mostly carbohydrate.

0.08 gFat

0.96 gProtein

16.2 gCarbohydrate

1.1 gFibre

60 gWater

1.6 gMinerals and the rest

0.08 gFat
0.96 gProtein
16.2 gCarbohydrate
1.1 gFibre
60 gWater
1.6 gMinerals and the rest

Above average for fruit

Bananas are 81 kcal per 100 g. The 143 fruit in this database average 68.8.

Bananas81

Fruit average68.8

Low in fat

0.1 g of fat per 100 g; the UK “low fat” line is 3 g.

Fat, per portion0.08 g

Saturates, per portion0.03 g

Vitamins and minerals in bananas

Three of the 23 reach the “source of” level, vitamin B6 first; none reaches “high in”.

18 %

Vitamin B6

0.25 mg in an 80 g portion

3rd of 117 fruit

Vitamin B6 contributes to the normal function of the immune system, to normal psychological function and to the reduction of tiredness and fatigue.

Manganese0.29 mg14 %

Potassium264 mg13 %

Thiamin (vitamin B1)0.12 mg11 %

Chloride87.2 mg11 %

Vitamin C7.2 mg9 %

Only a trace

Selenium
Sodium

None recorded

Vitamin D
Vitamin B12

Show all 23 with amounts

Vitamin B60.25 mg, 18 %

Manganese0.29 mg, 14 %

Potassium264 mg, 13 %

Thiamin (vitamin B1)0.12 mg, 11 %

Chloride87.2 mg, 11 %

Vitamin C7.2 mg, 9 %

Copper0.08 mg, 8 %

Magnesium21.6 mg, 5.8 %

Folate0.0112 mg, 5.6 %

Pantothenic acid (vitamin B5)0.28 mg, 4.7 %

Niacin (vitamin B3)0.72 mg, 4.5 %

Biotin0.002 mg, 4 %

Phosphorus18.4 mg, 2.6 %

Riboflavin (vitamin B2)0.03 mg, 2.3 %

Zinc0.16 mg, 1.6 %

Iodine0.0024 mg, 1.6 %

Iron0.22 mg, 1.5 %

Vitamin E0.13 mg, 1.1 %

Calcium4.8 mg, 0.6 %

Vitamin A0.0032 mg, <1 %

Vitamin K0.000048 mg, <1 %

Vitamin Dnone recorded

Vitamin B12none 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 bananas don’t give you. And where to find it.

No recorded vitamin D or selenium, and only 2 % of the zinc reference intake per 100 g.

Vitamin D

0mgin bananas

Find it inBloater, grilled500 % per 100 g

Selenium

Tracein bananas

Find it inKidney, pig, fried491 % per 100 g

Zinc

2%in bananas, per 100 g

Find it inOysters, raw592 % per 100 g

Immufix Daily Immune Support pouch, orange flavour

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.

Try it for 30 days See what’s in the scoop

30-day money-back on your first pouch. 75 kcal and 9.9 g of sugars a scoop.

Try your first pouch

30-day money-back guarantee on your first qualifying pouch, less £10 shipping and handling.

Tracked UK delivery

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.

Bananas against other fruit

Per 100 g, bananas have the most vitamin B6 of the 6 here, ahead of sultanas.

0.3mg

0.2mg

0.1mg

Bananas, flesh onlythis page

Sultanas−0.1 mg

Tamarillos, flesh and seeds−0.1 mg

Figs, dried, stewed without sugar−0.2 mg

Raspberries, raw−0.2 mg

Cherries, raw−0.2 mg

All values per 100 g, from the same dataset. Differences are against bananas.

Since that first introduction in 1998, Immufix has remained a constant in my life.

Paula Radcliffe, ambassador and co-owner. Read her story

Taken every morning since 1998.

Paula Radcliffe has taken the same formula since she was 24. Customers rate Immufix 4.8 out of 5 from 89 reviews.

2:15:25World record, 2003

28Years, same routine

6London and New York wins

★★★★★

“High quality product with premium active ingredients”

Simon B · 20 August 2026

Questions about bananas

Four questions chosen by the facts above, so every food answers differently.

How many calories are in a portion of bananas?

A typical portion (80 g, one of your five a day) gives 65 kcal. Per 100 g the figure is 81 kcal.

Is bananas a source of vitamin B6?

It is a source of vitamin B6: 0.31 mg per 100 g, 22 % of the NRV, which passes the 15 % threshold for “source of” but not the 30 % needed for “high in”.

Which vitamins and minerals do bananas have most of?

By share of the daily reference intake: vitamin B6 (0.31 mg, 22 %), manganese (0.36 mg, 18 %) and potassium (330 mg, 17 %) per 100 g.

What counts as a portion of bananas?

This page uses 80 g, one of your five a day, the usual UK portion for fruit. 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 14-318, Bananas, flesh only, 11 analysed samples, published by Public Health England under the Open Government Licence v3.0. Main data references: DH, Nutrient analysis of fruit and vegetables, 2013. Values are per 100 g of the edible part; a portion is 80 g, one of your five a day, the usual UK portion for fruit. 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 143 fruit 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 fruit

From the same group, with calories per 100 g, and the foods with the most vitamin B6.

Greengages, stones, removed, stewed without sugar36 kcal

Mangosteen73 kcal

Peaches, canned in juice, whole contents39 kcal 143fruitin this food group

How many calories are in bananas?

What’s in an 80 g portion

Above average for fruit

Low in fat

Vitamins and minerals in bananas

Vitamin B6

Only a trace

None recorded

What bananas don’t give you. And where to find it.

Vitamin D

Selenium

Zinc

Or one scoop of Immufix

Try your first pouch

Tracked UK delivery

Made in Cambridgeshire

Bananas against other fruit

Taken every morning since 1998.

Questions about bananas

More fruit

More fruit

Most vitamin B6

Nutrient guides

Nutrition

Vitamins and minerals