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Body Surface Area — Du Bois Formula Calculator

BSA = 0.007184 × W^0.425 × H^0.725 m².

Estimates body surface area using the Du Bois formula: BSA (m²) = 0.007184 × weight(kg)^0.425 × height(cm)^0.725. Used for drug dosing and cardiac output indexing.

Nadia Almasri By Nadia Almasri
Published Last reviewed 1 min read

Inputs

kg
cm

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 = 0.007184 × W^0.425 × H^0.725

In depth

Estimates body surface area using the Du Bois formula: BSA (m²) = 0.007184 × weight(kg)^0.425 × height(cm)^0.725. Used for drug dosing and cardiac output indexing.