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Free BSA Calculator (Mosteller Formula)
Calculate your Body Surface Area (BSA) accurately for medical dosage and metabolic assessments. We use the Mosteller formula, which is widely recognized for its simplicity and precision.
What is BSA?
Body Surface Area is the total surface area of the human body. It is commonly used by doctors to calculate chemotherapy dosages and Fluid resuscitation because it is a more accurate indicator of metabolic mass than simple body weight.
The Formula
BSA (m²) = √ [ (Height(cm) x Weight(kg) ) / 3600 ]
Average BSA Values
- Adult Men: 1.9 m²
- Adult Women: 1.6 m²
- Children (10 years): ~1.14 m²
- Neonates: ~0.25 m²