You asked:

how many calories are in a banana

  • There are varieties of bananas. Raw bananas have 89 calories per 100g (25 cals per oz) or dehydrated bananas or banana powder has 346 calories per 100g (98 cals per oz), for example. A normal value is 346 calories per 100g (98 cals per oz) (e.g. for dehydrated bananas)