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BSA Haycock Calculator

BSA (m²) = 0.024265 · h^0.3964 · w^0.5378.

Compute body surface area using the Haycock formula — favoured for paediatric patients: BSA (m²) = 0.024265 · h^0.3964 · w^0.5378, where h is height in cm and w is weight in kg.

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 = 0.024265 · h^0.3964 · w^0.5378

In depth

Compute body surface area using the Haycock formula — favoured for paediatric patients: BSA (m²) = 0.024265 · h^0.3964 · w^0.5378, where h is height in cm and w is weight in kg.