Educational Guide Published: 2026-10-24

How to Calculate Body Mass Index (BMI): Standards & Limitations

Understand BMI calculations, World Health Organization weight categories, and the limitations of body mass index as a health metric.

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Body Mass Index (BMI) is a widely used screening tool to evaluate whether an adult falls into a healthy weight range relative to their height. While useful for population statistics, BMI has limitations regarding muscle mass versus body fat.

Calculate your BMI instantly using our metric and imperial BMI Calculator.

Frequently Asked Questions

What is the formula for BMI?

BMI = weight (kg) / [height (m)]^2, or (weight (lbs) / [height (in)]^2) * 703.

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Editorial & Accuracy Note: This educational article is provided for informational and planning purposes. Calculations and formulas are verified against standard reference models. Consult certified professionals for specific financial, medical, or legal decisions.