Example 1: Adult BSA
Input
- Height: 170 cm
- Weight: 70 kg
Calculation
BSA = sqrt((170 x 70)/3600) = sqrt(3.3056) = 1.82
Result
BSA = 1.82 m^2
Estimate body surface area in square meters using standard medical equations.
Body surface area (BSA) is commonly used in medicine, especially for chemotherapy dosing, fluid estimates, and physiologic indexing.
Different formulas exist, but Mosteller is popular because it is simple and close to more complex models.
Use current measured body weight.
Use standing measured height.
Select Mosteller, Du Bois, or another method.
Read result in m^2.
Use with protocol-specific dosing equations.
Update with large weight shifts during treatment.
Mosteller BSA = sqrt((height(cm) x weight(kg)) / 3600)
Mosteller approximates body surface area by combining height and weight under a square-root scaling relationship.
BSA = sqrt((170 x 70)/3600) = sqrt(3.3056) = 1.82
BSA = 1.82 m^2
BSA = sqrt((155 x 52)/3600) = 1.50
BSA = 1.50 m^2
Total dose = 75 x 1.82 = 136.5 mg
Approximate dose: 136.5 mg