BSA Calculator
Calculate your Body Surface Area using the Mosteller formula
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BSA is used in chemotherapy dosing, burn assessment, and renal function evaluation. The Mosteller formula is the most widely used BSA calculation.
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Fill in your weight and height to calculate your BSA
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References
- Mosteller RD. N Engl J Med. 1987;317(17):1098
- Du Bois D, Du Bois EF. Arch Intern Med. 1916;17:863-871
- Haycock GB, et al. J Pediatr. 1978;93(1):62-66
About Body Surface Area
How It Works
Body Surface Area (BSA) is a measurement used in medical contexts, particularly for chemotherapy dosing, burn treatment assessment, and determining cardiac output indices. Our calculator provides BSA estimates using the Mosteller, Du Bois, and Haycock formulas, allowing comparison across methods.
How to Interpret Results
Average BSA for adults is approximately 1.7 m² for men and 1.6 m² for women. BSA is not typically used for fitness assessment but rather for clinical applications. Different formulas may give slightly different results; the Mosteller formula is most commonly used in clinical practice.
Clinical Applications
BSA is primarily used in: chemotherapy drug dosing, burn surface area assessment, cardiac output indexing, renal function calculations, and glucocorticoid replacement therapy dosing. Always consult a healthcare professional for medical applications of BSA results.
Last reviewed: July 16, 2026
Medical Disclaimer: This calculator is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or qualified health provider with any questions regarding your health.