BMI calculator

BMI / Body Surface Area

BMI & Body Surface Area

Parameter	Value
Weight (kg)
Height (cm)
Results
BMI (kg/m²)	kg/m²
BSA (Mosteller, m²)	m²

BMI Classification (WHO)
<18.5 | Underweight
18.5–24.9 | Normal weight
25–29.9 | Overweight
30–34.9 | Obesity class I
35–39.9 | Obesity class II
≥40 | Obesity class III (morbid)

References
WHO. Obesity: preventing and managing the global epidemic. WHO Technical Report Series 894. Geneva, 2000. Mosteller RD. Simplified calculation of body-surface area. N Engl J Med. 1987;317(17):1098. PMID 3657876. BMI = weight (kg) / height² (m²). BSA (Mosteller) = √(height(cm) × weight(kg) / 3600).