Body Surface Area Calculator (Mosteller)
Enter height and weight to calculate body surface area (BSA) using the Mosteller formula.
Patient Measurements
feet
inches
Result
Enter measurements and click Calculate
Body Surface Area (Mosteller)
m²
Parameter
Value
Height
Weight
Formula
√(h × w / 3600)
vs. average adult
BSA Reference Ranges
Average adult
1.73 m²
Reference standard in clinical guidelines
Typical male
1.7–2.0 m²
Based on average adult male height/weight
Typical female
1.5–1.8 m²
Based on average adult female height/weight
Disclaimer: This tool is for informational and educational purposes only. Always consult a qualified healthcare professional for clinical dosing decisions.
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Summary
Enter height and weight to calculate body surface area (BSA) using the Mosteller formula.
How it works
- Enter your height in centimeters (or switch to feet/inches).
- Enter your weight in kilograms (or switch to pounds).
- The calculator applies the Mosteller formula: BSA = √(height_cm × weight_kg / 3600).
- Your BSA result is displayed in square meters (m²).
- Use the result for chemotherapy dose calculations or clinical reference.
Use cases
- Calculating chemotherapy drug doses based on body surface area.
- Estimating drug doses for oncology and clinical pharmacology.
- Burn area percentage reference in trauma and emergency care.
- Pediatric drug dosing requiring surface-area normalization.
- Comparing patient BSA to standard adult reference (1.73 m²).
- Renal clearance and GFR adjustment relative to BSA.
Frequently Asked Questions
Last updated: 2026-07-22 ·
Reviewed by Nham Vu