Free · Mosteller 1987 · Private
Body Surface Area Calculator
BSA in square meters from height and weight. The standard clinical metric for chemotherapy and cardiac index.
Your body surface area—m²
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Frequently asked questions
What is BSA used for?
Chemotherapy dosing, cardiac index, burn assessment, pediatric dosing. Average adult ~1.9 m².
Mosteller vs DuBois?
Mosteller (1987) is simpler and within ±5% of DuBois (1916). Both are used clinically.
Is BSA the same for men and women?
Average men ~2.0 m²; average women ~1.7 m². The formula itself does not use sex — differences are driven by height and weight.