Banana calories by size and peeled weight

A medium banana contains about 105 calories. That estimate uses 118 g of edible fruit, with the peel removed; the USDA reference for raw banana is 89 kcal per 100 g. A larger banana or a smaller piece changes the total, so the weight is more useful than the size label when you want a closer estimate.

Small, medium, or a banana weighed at home?

The medium and large portions below come from the USDA record: 118 g gives about 105 kcal, and 136 g gives about 121 kcal. The sliced-cup example is 150 g, or about 134 kcal. These weights describe the fruit you eat, so weighing a whole banana with its peel will overestimate your portion.

For a banana that falls between those sizes, use the calculator below. For example, 95 g of peeled banana gives about 85 kcal: 95 × 89 ÷ 100. Food-composition values are averages, so that result is a practical estimate rather than a measurement of that individual fruit.

Carbs and additions to a snack

The reference contains 22.84 g of carbohydrates and 1.09 g of protein per 100 g. A medium banana therefore provides about 27 g of carbohydrates and 1.3 g of protein. If you are tracking a smoothie or breakfast bowl, add the milk, oats, nut butter, and other ingredients to the same meal record.

A frozen banana blended on its own keeps the ingredient calculation simple: use its peeled weight before freezing. Banana bread, banana chips, and a smoothie with several ingredients need their own label or recipe calculation; this raw-fruit entry cannot describe the whole finished food.