How to Calculate BMI: Understanding the Body Mass Index Formula

What is Body Mass Index?

Body Mass Index (BMI) is a universal health metric used to determine if an individual falls within a healthy weight range relative to their height. Understanding how to calculate BMI helps you track physical conditioning safely.

The BMI Math Formula:

BMI is calculated using the following metric equation:

BMI = Weight (kg) / [Height (m)]²

BMI Categories:

• Underweight: BMI less than 18.5
• Healthy Weight: BMI between 18.5 and 24.9
• Overweight: BMI between 25.0 and 29.9
• Obese: BMI of 30.0 or higher

Skip the math and calculate your body index instantly with our BMI Calculator.