Pediatric Body Surface Area Calculator

Calculate pediatric body surface area (BSA) using Mosteller, DuBois, and Haycock formulas. Used for chemotherapy dosing, fluid calculations, and cardiac index.

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 pediatric body surface area (BSA) using Mosteller, DuBois, and Haycock formulas. Used for chemotherapy dosing, fluid calculations, and cardiac index

Each component has a specific meaning:

  • Mosteller — The mosteller recorded for the patient or scenario being assessed.
  • DuBois — The dubois recorded for the patient or scenario being assessed.
  • Haycock formulas — The haycock formulas recorded for the patient or scenario being assessed.

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

How to Use

Enter the Mosteller, DuBois, Haycock formulas for the patient or scenario you are assessing. Calculate pediatric body surface area (BSA) using Mosteller, DuBois, and Haycock formulas. Used for chemotherapy dosing, fluid calculations, and cardiac index. Use the pediatric bsa result to inform your clinical assessment.

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Frequently Asked Questions