Health & Medical
Body Surface Area Calculator
Body surface area (BSA) is used in clinical medicine to calculate drug doses — particularly for chemotherapy, where dosing by BSA is more accurate than by weight alone. This calculator uses the Mosteller formula, the simplest and most widely validated method.
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Body Surface Area (m²)
Average adult BSA: ~1.7–1.9 m² (male), ~1.6–1.7 m² (female). Chemotherapy dosing typically uses mg/m². For example, a drug dosed at 100 mg/m² would be 175 mg for a 1.75 m² patient. Always confirm drug doses with a healthcare provider or pharmacist.