BMI Calculator
Quickly check your Body Mass Index and understand your weight category.
Quickly check your Body Mass Index and understand your weight category.
Your Body Mass Index (BMI) is a simple numerical measure that compares your weight to your height. Health professionals globally use it as a screening tool to categorize weight into distinct brackets: underweight, healthy weight, overweight, and obesity.
Our free BMI Calculator uses the standard formulas established by the World Health Organization (WHO):
While BMI is a great general indicator, it does not distinguish between fat mass and muscle mass. For example, athletes or bodybuilders with high muscle mass may have a high BMI but a very low body fat percentage.
This standard BMI calculator is designed for adults (ages 18 and older). Children and teenagers require a different calculation that factors in age and gender percentiles to accurately assess growth patterns.
Maintaining a BMI within the "Normal Weight" range can significantly reduce the risk of underlying health conditions, including heart disease, high blood pressure, and type 2 diabetes. It is a quick starting point for assessing overall physical health.