Yes we can use BMI for children. BMI-for-age is not recommended for use in the United States before 2 years of age to screen for overweight, obesity, or underweight.Measure the child's weight in pounds.
Measure the child's height in inches.
Calculate the BMI by dividing the weight by the height squared and multiplying that total by 70For children and teens, BMI is not a diagnostic tool. Instead it is used to screen for potential weight and health-related issues. If children have a high BMI for their age and sex, a health care provider may perform further assessments to determine if excess fat is a problem.3.