Body Surface Area Calculator (BSA)
Estimate your body surface area (m²) with the Mosteller formula.
Result
Body surface area (m²)
1.845
How it works
BSA = √(height × weight ÷ 3600)
Body surface area is used in medicine to scale drug doses. The Mosteller formula uses height (cm) and weight (kg). Example: 175 cm / 70 kg ≈ 1.84 m².
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Frequently asked questions
What is BSA used for?
Mainly to calculate medication doses (e.g. chemotherapy) and physiological measures.
What is an average BSA?
About 1.7 m² for adults, varying with height and weight.
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