Body Surface Area Calculator (Mosteller & DuBois)
Compute the body surface area in square metres using the Mosteller and DuBois formulas for dermatology and oncology dosing.
How to Use the Body Surface Area Calculator (Mosteller & DuBois)
- Enter patient height in centimetres.
- Enter weight in kilograms.
- Click Calculate to see both BSA formulas.
Use Cases
- •Chemotherapy dose calculation.
- •Burn surface assessment.
- •PASI/SCORAD dermatology scoring.
Formula
Mosteller: BSA = √(height_cm × weight_kg / 3600). DuBois: BSA = 0.007184 × height_cm^0.725 × weight_kg^0.425.
Frequently Asked Questions
Which formula should I use?
Mosteller is simpler and widely adopted for chemotherapy dosing. DuBois is older but still common in dermatology (PASI weighting, burn assessment).
Is BSA the same as BMI?
No. BSA is the total skin area; BMI is a mass-to-height ratio. BSA correlates better with metabolic rate and drug clearance.
Medical disclaimer
Educational tool only. Not a substitute for clinical judgment — chemotherapy and burn dosing must be reviewed by a qualified clinician.