Body Surface Area (BSA) Calculator
Calculate Body Surface Area using the Mosteller formula.
Supports metric and imperial units.
Used for medication dosing and clinical assessments.
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Body Surface Area
Body Surface Area (BSA) is used in medicine to calculate drug dosages (especially chemotherapy) and assess metabolic rates.
Mosteller formula:
BSA (m²) = √((Height (cm) × Weight (kg)) / 3600)
For imperial units, convert first:
- Height: inches × 2.54 = cm
- Weight: lbs × 0.4536 = kg
Or use the imperial Mosteller formula:
BSA (m²) = √((Height (in) × Weight (lbs)) / 3131)
Average BSA values:
- Adult male: ~1.9 m²
- Adult female: ~1.6 m²
- Child (10 years): ~1.1 m²
- Newborn: ~0.25 m²
Note: BSA is used by healthcare professionals for dose calculations. This tool is for informational purposes. Always follow your healthcare provider"s recommendations.