BMI Calculator

Advanced BMI Calculator

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BMI Result

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Ponderal Index

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BMI Introduction

BMI (Body Mass Index) is a measurement of a person's leanness or corpulence based on their height and weight, intended to quantify tissue mass. It serves as a general indicator of whether a person maintains a healthy body weight relative to their height. The calculated BMI value categorizes individuals into weight status categories such as underweight, normal weight, overweight, or obese, depending on specific value ranges.

These BMI ranges vary by region and age, with further subcategories including severe thinness or very severe obesity. While BMI has limitations and doesn't directly measure body fat, it remains a useful screening tool to identify potential weight-related health risks that may require further medical assessment.

WHO BMI Classification for Adults

Applies to both men and women aged 20 years and older

Classification	BMI Range (kg/m²)
Severe Thinness	< 16
Moderate Thinness	16 - 17
Mild Thinness	17 - 18.5
Normal	18.5 - 25
Overweight	25 - 30
Obese Class I	30 - 35
Obese Class II	35 - 40
Obese Class III	> 40

Important Note: BMI is a screening tool but not a diagnostic measure. It doesn't account for muscle mass, bone density, or body composition. Always consult a healthcare professional for comprehensive health assessment.