Health
BMI Calculator
Calculate your Body Mass Index instantly. Supports both imperial and metric units with full category interpretation.
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About BMI
BMI (Body Mass Index) is a simple screening tool that estimates body fatness based on height and weight. It is calculated as weight in kilograms divided by height in meters squared.
BMI ranges: Underweight <18.5 · Normal 18.5–24.9 · Overweight 25–29.9 · Obese ≥30. BMI does not directly measure body fat and has limitations across age groups and body types.