Teenagers are in a period of rapid growth and development, and their nutritional needs are high. This calculator provides an estimation of the daily calories and macronutrients (protein, carbs, and fat) required to support a teen's health and activity levels. It's designed to be a starting point for understanding energy needs, not a tool for restrictive dieting. Disclaimer: This is an informational tool and not a substitute for advice from a healthcare provider or registered dietitian. Individual needs can vary greatly.