Body Surface Area (BSA) Calculator
Estimate your total body surface area for medical dosing calculations and clinical assessments.
Understanding Body Surface Area (BSA)
What is BSA?
Body Surface Area represents the total surface area of the human body, used to calculate medical dosages for chemotherapy, IV fluids, and other treatments where body size matters more than weight alone.
Common BSA Formulas:
| Method | Formula | Common Use |
|---|---|---|
| Mosteller | √(height × weight / 3600) | General clinical practice |
| Du Bois | 0.007184 × height0.725 × weight0.425 | Research studies |
| Haycock | 0.024265 × height0.3964 × weight0.5378 | Pediatrics |
Typical BSA Ranges:
- Newborn: 0.2-0.3 m²
- 5-year-old: 0.7-0.8 m²
- Adult female: 1.6-1.7 m²
- Adult male: 1.8-2.0 m²
Medical Disclaimer: This tool provides estimates only. Always consult healthcare professionals for medical dosing decisions.
