This free calculator calculates BMI (body mass index) and BSA (body surface area). This helps one know how their body weight is compared to their height.
BMI & BSA Calculator
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BMI
BMI:
Category:
BSA:
Ideal Weight:
Waist–Hip Ratio:
Pediatric BMI Percentile:
AI Interpretation Summary
Adult BMI Reference (WHO)
| Underweight | < 18.5 |
| Normal | 18.5 – 24.9 |
| Overweight | 25.0 – 29.9 |
| Obese | ≥ 30.0 |
*Reference: WHO classification for adults ≥18 years.
