Verified Mathematical Model & Formulation
Mosteller BSA (m²) = √[(Height_cm × Weight_kg) / 3600] Du Bois BSA (m²) = 0.007184 × (Height_cm)^0.725 × (Weight_kg)^0.425 Haycock BSA (m²) = 0.024265 × (Height_cm)^0.3964 × (Weight_kg)^0.5378 Normal Adult Average ≈ 1.7 m² (Women) to 1.9 m² (Men)
Quantifies the total external surface area of the human body, providing a superior clinical indicator of metabolic mass and renal clearance than simple body weight.
Configurable Parameters & Standard Units
- Height (cm): (Default: 175 cm)
- Body Weight (kg): (Default: 70 kg)
Standard Worked Example & Practical Verification
Scenario: Determining exact BSA for chemotherapy indexing on a patient weighing 70 kg and measuring 175 cm.
Practical Takeaway: Mosteller formula computes 1.85 m², correlating within 0.3% of classic Du Bois measurements.
Frequently Asked Questions
Why is chemotherapy dosed by BSA instead of body weight?
Metabolic turnover, organ blood flow, and renal clearance correlate much more directly with body surface area than total weight, reducing medication toxicity risk in overweight patients.
What is considered a normal adult BSA?
The average adult male has a BSA of approximately 1.9 m², while the average adult female has a BSA of approximately 1.6 to 1.7 m².