Health Formula • Published on July 30, 2026 • Last updated July 30, 2026
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Body weight in kilograms
Body height in meters
Body Mass Index (BMI) is a simple, widely used metric to estimate whether a person has a healthy body weight relative to their height.
BMI categorizes individuals into underweight (under 18.5), normal weight (18.5 - 24.9), overweight (25 - 29.9), and obese (30 and above).
It acts as a screening tool to identify possible weight problems for adults.
BMI is a general screening tool. It does not measure body fat directly. For athletes or highly muscular individuals, BMI may overestimate body fatness because muscle weighs more than fat.
Underweight: <18.5, Normal: 18.5–24.9, Overweight: 25–29.9, Obese: 30 or higher.
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