This calculator computes your body mass index based on your gender, age, height and weight. After you input the information to this calculator, it will provide you with accurate BMI and also tell ...

Medically reviewed by Amelia MacIntyre, DO The body mass index (BMI) tool is used to determine obesity levels in populations.

The situation is more complex in children, where the BMI threshold of obesity varies with age and sex. The charts below show how the BMI obesity threshold changes with age for boys and girls.

Use this calculator to determine whether a child is at a healthy weight for his/her height, age and sex. The BMI-percentile-for-age calculator automatically adjusts for differences in height, age and ...

A BMI calculator is widely used as a general tool ... The BMI calculation remains the same for everyone over the age of 20. BMI is calculated by the height and weight of the given person.

For example, this CDC BMI calculator is appropriate for adults ages 20 years and older. If you’re under age 20, the CDC also has a BMI percentile calculator for people ages 2 to 19 years.

However, new research to be presented at the European Congress on Obesity (ECO 2025) suggests BMI may become less reliable with age. The study, conducted by researchers from Italy and Lebanon ...

Thus the authors, in this new study, aimed to analyse the differences in the total and segmental body composition between age groups. A total of 2,844 adults of both sex and a Body Mass Index (BMI ...

People with obesity with similar body mass index (BMI) measurements have differences in muscle and fat based on their age groups. This could mean that BMI isn’t the best tool for older adults ...

Body mass index (BMI) is key method for measuring a person’s weight ... differences in body composition in different body compartments according to their age group, such as higher body fat especially ...