BMI Calculator by age for men, women, teens, kids: accurate bmi calculator

BMI is standard method to determine whether the weight of a person is in according to his/her height or not.
To calculate body mass index (BMI) we divide weight (in kg) by the square of height of any person. Unit of BMI is kg/m². BMI clearly indicates the person’s body structure in numerical format. Calculation method of BMI for adults and children is same; but in case of children it is compared to the BMI value of other children of same age group and same sex. We make predictions on the basis of percentile rather than threshold value of BMI in that case. Typically BMI less than 5th percentile is considered as underweight and BMI greater than 95th percentile is considered as overweight. If you are interested in ideal body weight for your height visit our Ideal Body Weight page.