How to determine the recomended coloric requirement for a teenager?

Everyone needs calories to survive. A calorie is the measurement of potential energy something can give you. Everyone has a different recommended caloric intake, varying by how good your metabolism is, how active you are, and what age you are. Usually adolescents between the ages of 12 and 18 have many growth spurts and may have to intake more calories than ages outside of that zone.

Your body needs nutrients to help promote the growing process. In eating nutrients you must also intake calories.

According to http://www.exercise4weightloss.com the table below is the recommended caloric intake for certain people.