Body Surface Area Calculator

Estimate body surface area from height and weight. Free, private, and runs entirely in your browser.

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Enter values and press Calculate to see the result here.

How this is calculated

Two common formulas estimate skin surface area from height and weight; clinicians use BSA for some dose calculations.

Mosteller: √(cm × kg ÷ 3600)

DuBois: 0.007184 × kg^0.425 × cm^0.725

Is this medical advice? No, it is informational only.

Which formula? They agree closely for most adults.