BMI and Body Surface Area (Mosteller)
BMI = kg/m²; BSA (m²) from the Mosteller square-root formula.
Calculator
How it works
What this tool does
Computes BMI as weight divided by height squared (meters), and BSA using Mosteller: √(height_cm × weight_kg / 3600).
Formulas
BMI = weight_kg / (height_m)² BSA (m²) = √( height_cm × weight_kg / 3600 )
Limits
Limitations
BMI does not distinguish muscle vs fat; BSA equations differ (DuBois, Haycock); pediatric norms differ from adults.
Educational tool only—not for diagnosis or treatment decisions.