เครื่องคำนวณพื้นที่ผิวร่างกาย (BSA)

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What is body surface area (BSA)?

BSA is the total external surface area of the body, measured in square metres. It is widely used in medicine to scale drug doses, especially chemotherapy, and to express physiological values like cardiac index, since it tracks body size better than weight alone.

How is BSA calculated?

The Mosteller formula is BSA (m2) = the square root of (height cm x weight kg / 3600), a simple, widely used estimate. The Du Bois formula uses height and weight with exponents. Enter both measurements and the tool returns each result plus the average.

What is a typical BSA value?

The average adult BSA is about 1.7 m2, with most adults falling roughly between 1.5 and 2.0 m2 depending on height and weight. Different formulas can vary slightly, so clinical dosing usually specifies which formula to use.