BSA (body surface area) is the total surface area of your body in square metres. It is used in some clinical formulas and dosing calculations.

What formula is used?

This calculator uses the Mosteller formula: BSA = √(weight × height / 3600) with weight in kg and height in cm.

BSA Calculator (Mosteller)

Body surface area using the Mosteller formula. Useful for drug dosing and clinical indices.

What this calculator does

This tool estimates your body surface area (BSA) using the Mosteller formula. BSA is the total area of your body’s surface and is sometimes used in clinical settings for dosing or other indices.

What your result means

The result is given in square metres (m²). It is a reference value used by clinicians in certain calculations. Your doctor can explain how it applies in your case.

This is not medical advice. A healthcare provider should interpret results in your context.

Weight (kg)

Height (cm)

Key terms

BSA: Body surface area; total surface area of the body, often in m².
Mosteller formula: A common equation for BSA: √(weight × height / 3600) when weight is in kg and height in cm.
m²: Square metres; the unit for body surface area.

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This tool is for educational and reference use only. It does not constitute medical advice. Always consult a healthcare professional for medical decisions.