A medium-sized banana (about 7 to 8 inches long, 118 grams) typically contains around 27 grams of total carbohydrates. This includes approximately 3 grams of fiber, which means the net carbs (total carbs minus fiber) are about 24 grams. The carbohydrate content can vary slightly depending on the banana's size and ripeness, with unripe bananas containing more starch and fewer sugars, while ripe bananas have more sugars and fewer starches

. In summary:

• Total carbs in a medium banana: ~27 grams
• Fiber: ~3 grams
• Net carbs: ~24 grams

Calories for a medium banana are roughly 100-105 calories, with most calories coming from carbohydrates