The body surface area (BSA) is to calculate surface area of a human body.

There are many ways to calculate the body surface area. There are five formulas below show how to calculate BSA.

DuBois & DuBois Formula: bsa = 0.20247 × height (m)^{0.725} x weight (kg)^{0.425}

Mosteller Formula: bsa = √height (cm) × weight (kg) /60

Haycock Formula: bsa = 0.024265 x height (cm)^{0.3964} x weight (kg)^{0.5378}

Boyd Formula: bsa = 0.0003207 x height (cm)^{0.3} x weight (g)^{0.7285 - (0.0188 x log(weight))}

Gehan and George Formula: bsa = 0.0235 x height (cm)^{0.42246} x weight (kg)^{0.51456}

Where BSA is in m2, H is height in cm, and W is weight in kg.

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