How many calories in a 100 g banana? A complete nutritional guide
                                
                                
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                                    4 min read                                
                            
                                According to USDA data, a 100 g banana (the edible portion) contains approximately 89 calories. This popular and portable fruit provides a wealth of essential nutrients, including significant amounts of potassium and vitamin B6, making it far more than just a sweet treat.