How is BMI calculated?

BMI (Body Mass Index) is calculated using weight and height measurements. Metric formula: BMI = weight (kg) / [height (m)]². Imperial formula: (weight (lbs) / [height (in)]²) × 703.

Is BMI accurate for everyone?

While useful for population studies, BMI has limitations for athletes, pregnant women, and those with high muscle mass. It doesn't differentiate between muscle and fat mass.

BMI Calculator FAQs

Expert Answers to Your Body Mass Index Questions

BMI Calculation Methods

How to calculate BMI manually?

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Use these formulas:

Metric System

weight (kg) / [height (m)]²

Imperial System

(lbs / inches²) × 703

BMI Accuracy & Limitations

Is BMI accurate for athletes?

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Muscle mass vs body fat differences
Doesn't consider fat distribution
Ethnic variations in body composition

For personalized health assessment, consult our ethnic-specific BMI guide.

BMI Categories & Health

WHO BMI Classification
BMI Range	Category	Health Risk
< 18.5	Underweight	Increased
18.5-22.9	Normal (Asian)	Average
23-24.9	Overweight	Moderate

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