This BMI Calculator Plus app helps you to calculate ideal weight according to (Body Mass Index) by entering your gender, age, height and weight. It is used as an indicator, whether a person's ideal weight is according to his height and age. The resulting BMI value determines the ideal weight ranges in which a person falls. Each age group have different BMI values that are further divided into small categories. It can help you to loose or gain weight according to the BMI values.