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Body Surface Area (BSA)

The measured or calculated surface area of the human body in square meters, used in medicine for drug dosing and burn assessment.

Body Surface Area (BSA) is used in clinical settings to calculate drug dosages (especially chemotherapy), determine cardiac index, and assess burn severity.

Common Formulas

  • DuBois: BSA = 0.007184 Γ— W^0.425 Γ— H^0.725
  • Mosteller: BSA = √(W Γ— H / 3600)
  • Haycock: BSA = 0.024265 Γ— W^0.5378 Γ— H^0.3964

Where W = weight in kg, H = height in cm.

Average BSA

Adult male: ~1.9 mΒ². Adult female: ~1.6 mΒ². Average BSA is used as the reference for "standard" drug doses.

Related Calculators

Related Terms