Body Surface Area (BSA) Calculator

Body Surface Area (BSA) Calculator for Endocrinology. BSA can support medication dosing, chemotherapy dosing, cardiac index normalization, and physiologic comparisons when appropriate.

How this calculator works

Body surface area estimates body size from height and weight, commonly using the Mosteller formula.

Inputs used

  • Height
  • Weight

Clinical interpretation

BSA can support medication dosing, chemotherapy dosing, cardiac index normalization, and physiologic comparisons when appropriate.

Limitations and safety notes

BSA-based dosing must follow drug-specific protocols and may need adjustment for obesity, renal function, toxicity, and treatment intent.

References

  • Mosteller RD. Simplified calculation of body-surface area. N Engl J Med. 1987.

Editorial review and citation methodology

Reviewed by the Quick Medical Calculator Editorial Team. Last reviewed: June 19, 2026. The review checks calculator inputs, intended population, interpretation, limitations, and source alignment.

  • Prefer original validation studies for scoring systems and prediction tools.
  • Use current specialty society guidance, transplant allocation policy, public health guidance, or regulator resources when they govern clinical use.
  • Include limitations and safety notes when a calculator is population-specific, context-dependent, or unsuitable as a standalone decision tool.