Body Surface Area (BSA) Calculator
Calculate BSA using validated formulas. Used for chemotherapy dosing, cardiac output indexing, burn area estimation, and pediatric drug dosing.
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Patient Measurements
BSA
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m²
Formula Used
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⚠️ BSA calculations are estimates. Verify with oncology or pharmacy teams for chemotherapy dosing. Clinical judgment and institutional protocols take precedence.
Clinical Uses of BSA
Chemotherapy dosing
Most chemo agents dosed in mg/m²
Cardiac index
CO / BSA = Cardiac Index (L/min/m²)
Burn assessment
Fluid resuscitation via Rule of Nines
Pediatric dosing
More accurate than weight alone for neonates/infants
Average adult BSA:
Male ≈ 1.9 m² | Female ≈ 1.6 m²