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Body Surface Area Calculator

Body surface area (BSA) using the DuBois formula.

Estimate body surface area in m² from height and weight using the DuBois & DuBois formula — useful for medication dosing and physiology.

Priya Venkatesan By Priya Venkatesan
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

kg
cm

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

BSA (m²) = 0.007184 × W0.425 × H0.725, with W in kg and H in cm.

In depth

Estimate body surface area in m² from height and weight using the DuBois & DuBois formula — useful for medication dosing and physiology.