banana nutrition
Banana Nutrition: Potassium, Fibre and Serving Ideas
Banana nutrition per 100g, including potassium and fibre, plus simple ways to use bananas in meals.
Reviewed 15 July 2026. Sources: NHS and USDA FoodData Central.
Quick answer
Bananas provide carbohydrate, potassium, vitamin B6 and fibre. The USDA-based data used by Nutrigate lists about 358mg of potassium and 2.6g of fibre per 100g.
Nutrition data per 100g
USDA-based values used by Nutrigate for a generic food. Preparation and branded products can differ.
- Potassium
- 358mg
- Fibre
- 2.6g
- Vitamin B6
- 0.4mg
Bananas are simple, useful food
A banana is portable, affordable and easy to eat when you need something quick. Its carbohydrate can make it handy before activity, or as part of a snack with yoghurt, milk or peanut butter.
The size of the banana changes the nutrition. A small banana, a large banana and a weighed 100g portion are not the same thing, so treat per-100g values as a comparison tool.
Pair it with something else if you need staying power
Banana on its own can be a great snack. If you want it to keep you full for longer, add protein or fat, such as Greek yoghurt, milk, nuts or toast with peanut butter.
Sliced banana works in porridge, overnight oats, pancakes and sandwiches. It can also sweeten a smoothie, though whole fruit is usually more filling than juice or a drink.
No need to fear the sugar in fruit
Bananas contain naturally occurring sugars, alongside fibre and other nutrients. NHS guidance says the sugars naturally present in whole fruit are not the sugars people are advised to cut down on.
If you need to manage blood glucose or potassium for a medical reason, get individual advice about portions from your care team.
Questions people ask
Are bananas high in potassium?
They are a useful potassium source, though many other foods such as potatoes, beans, dairy and vegetables also contribute.
Is a banana a good breakfast?
It can be part of breakfast. Add yoghurt, milk, oats, eggs or nut butter if you want a more substantial meal.
Sources and notes
This guide is for general nutrition information. It does not diagnose a deficiency, treat a condition or replace personal medical advice.
- USDA FoodData Central
Food composition data and food search
- NHS: 5 A Day
What counts towards fruit and vegetable portions
- NHS: Sugar: the facts
Free sugars and practical swaps