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Calculate your Body Mass Index (BMI) and discover your healthy weight range.
Category: Normal weight
Standard BMI categories defined by the World Health Organization.
| Classification | BMI Range | Risk Level |
|---|---|---|
| Underweight | < 18.5 | Malnutrition / Deficiency Risk |
| Normal weight | 18.5 – 24.9 | Lowest Health Risk |
| Overweight | 25.0 – 29.9 | Increased Risk |
| Obesity Class I | 30.0 – 34.9 | High Risk |
| Obesity Class II | 35.0 – 39.9 | Very High Risk |
| Obesity Class III | ≥ 40.0 | Extremely High Risk |
Standard WHO BMI formula. For imperial: (weight in lbs × 703) / height in inches squared.
Person weighing 70 kg with a height of 175 cm (1.75 m).
70 / (1.75 × 1.75) = 70 / 3.0625
BMI = 22.86 (Normal weight)
BMI does not distinguish between muscle mass and fat mass. Highly muscular athletes may have a high BMI while having very low body fat.
Underweight (<18.5), Normal weight (18.5 - 24.9), Overweight (25 - 29.9), and Obese (30 or greater).
Tested against 1+ automated test cases via Vitest. Formulas are continuously checked against edge cases to prevent calculation drift.
Cross-verified against Microsoft Excel / OpenXML formula engines (PMT, SUM, IPMT) and statutory financial standards.
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