Calories in Banana

About Banana

Bananas are one of the most consumed fruits in the world, and for good reason. They are portable, affordable, naturally sweet, and packed with essential nutrients. A medium banana contains approximately 105 calories, making it a convenient energy source for pre-workout fuel, post-workout recovery, or a quick snack between meals.

The macronutrient profile of a banana is carbohydrate-dominant, with about 27 grams of carbs per medium fruit. Of those carbs, roughly 14 grams come from natural sugars (primarily fructose, glucose, and sucrose) and 3 grams come from dietary fiber. The glycemic index of bananas ranges from 42 to 62 depending on ripeness, with greener bananas having a lower GI due to their higher resistant starch content.

Bananas are especially well known for their potassium content — a single medium banana provides approximately 422 milligrams, or about 9% of the daily recommended intake. Potassium plays a critical role in muscle contractions, nerve signaling, and blood pressure regulation, which is why bananas are a favorite among athletes for preventing cramps and maintaining hydration balance.

Whether you are tracking calories for weight loss, muscle gain, or general health, bananas are easy to fit into any diet. BasedHealth makes it effortless to log a banana — simply snap a photo and the AI automatically calculates calories, carbs, and potassium based on the actual size you ate.