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Body Surface Area by Mosteller Formula Calculator

BSA = √(H(cm) × W(kg) / 3 600) m².

Compute body surface area (BSA) using the simplified Mosteller formula: BSA (m²) = √(height_cm × weight_kg / 3600). Clinically used for chemotherapy dosing, cardiac index, body-fluid calculations, and paediatric drug dosing.

Priya Venkatesan By Priya Venkatesan
Published Last reviewed 1 min read

Inputs

cm
kg

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 = √(H·W / 3 600) m².

In depth

Compute body surface area (BSA) using the simplified Mosteller formula: BSA (m²) = √(height_cm × weight_kg / 3600). Clinically used for chemotherapy dosing, cardiac index, body-fluid calculations, and paediatric drug dosing.