Body Surface Area Calculator

Calculate BSA using Mosteller formula (√(height×weight/3600)) and DuBois formula — essential for drug dosing.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate BSA using Mosteller formula (√(height×weight/3600)) and DuBois formula — essential for drug dosing

Each component has a specific meaning:

  • Mosteller formula ) — The mosteller formula ) recorded for the scenario being assessed.
  • DuBois formula — essential — The dubois formula — essential recorded for the scenario being assessed.

Note: Interpret the bsa calculator result against the thresholds and context described above.

How to Use

Enter the Mosteller formula ), DuBois formula — essential for the scenario you are assessing. Calculate BSA using Mosteller formula (√(height×weight/3600)) and DuBois formula — essential for drug dosing. Use the bsa calculator result to inform your calculation.

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