How many calories are in a banana?

A medium banana (about 118 g without the skin) has around 105 kcal. A small one has about 90 kcal and a large one about 120 kcal.

How much sugar is in a banana?

A medium banana has about 14 g of natural sugar. This counts as part of a healthy diet and is not the free sugar that health advice says to limit.

Calories in a banana

A medium banana has about 105 kcal, almost all of it from carbohydrate. Riper bananas taste sweeter but have about the same calories.

By the Calori team · Updated 21 October 2026 · 3 min read

Banana calories by portion

Portion	Calories	Protein	Carbs	Fat
Small banana (100 g peeled)	89 kcal	1.1 g	20.2 g	0.3 g
Medium banana (118 g peeled)	105 kcal	1.3 g	23.8 g	0.4 g
Large banana (136 g peeled)	121 kcal	1.5 g	27.5 g	0.4 g

Banana nutrition per 100 g

Energy	89 kcal (372 kJ)
Protein	1.1 g
Carbohydrate	20.2 g
of which sugars	12.2 g
Fat	0.3 g
Fibre	2.6 g

Typical values. Carbohydrate excludes fibre, as on UK food labels. Brands and varieties differ, so check the label where there is one.

Are bananas good for weight loss?

Yes, in sensible amounts. A banana is filling for its calories, gives you fibre and potassium, and is easy to carry. It is low in protein, so pair it with Greek yoghurt or a little peanut butter if you want it to keep you full for longer.

Ripe vs green bananas

As a banana ripens, its starch turns into sugar, which is why it tastes sweeter. The total calories barely change. Greener bananas have more resistant starch, which behaves more like fibre.

Log it without looking it up

Calori recognises foods like this from a photo and estimates the portion, so you can log a whole plate in one go. Set your daily target with our calorie calculator.

More calorie counts

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Frequently asked questions

How many calories are in a banana?: A medium banana (about 118 g without the skin) has around 105 kcal. A small one has about 90 kcal and a large one about 120 kcal.
How much sugar is in a banana?: A medium banana has about 14 g of natural sugar. This counts as part of a healthy diet and is not the free sugar that health advice says to limit.