Body Surface Area Calculator
Body surface area (m²) via the Mosteller formula.
How it works
BSA = √(height(cm) × weight(kg) ÷ 3600)
The Mosteller formula is simple and widely used clinically for dosing and burn-area estimates.
Worked example
175 cm, 70 kg, Du Bois:
BSA = 0.007184 × 70^0.425 × 175^0.725 ≈ 1.85 m².
Clinically it is used for chemotherapy dosing and cardiac index.
Notes and limitations
BSA formulas lose accuracy at extreme heights and weights, where adjusted body weight or measured lean mass is preferred. This tool is educational only — dosing must be determined by a clinician.