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Calcimator

Body Surface Area (BSA) Calculator

Calculate body surface area using Mosteller, DuBois, Haycock, and Gehan-George formulas for drug dosing and clinical assessments.

Inputs

in
lb

Average adult BSA: female ~1.6 m²; male ~1.9 m²; chemotherapy dosing per BSA m²; neonates ~0.2 m²

Results

Mosteller BSA

210.64sq ft

DuBois BSA209.71sq ft
Haycock BSA211.56sq ft
Gehan-George BSA212.14sq ft
How to Use This Calculator
  1. Enter patient height in cm and weight in kg.
  2. Review BSA by Mosteller, DuBois, Haycock, and Gehan-George formulas (m²).
  3. Use the Mosteller formula for most dosing contexts — it is the most widely validated.
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