What is the healthy wieght for a 5ft 4 inches 15 year old girl?

About 120 lbs. A healthy weight in relation to your height is about 120. You can plug in your height (inch) and weight (lbs) in the formula below. As long as your bmi is between 19 - 24 you are within a healthy range. Bmi = weight / (height/100)2.