Body Surface Area Calculator
Body Surface Area (BSA) is an important measurement used in medicine to calculate drug dosages, determine cardiac index, and assess metabolic rates. BSA is considered a more accurate indicator of metabolic mass than body weight alone, making it essential in clinical pharmacology and oncology.
This calculator provides BSA estimates using two well-established formulas: the Mosteller formula (a simplified, widely-used approximation) and the Du Bois formula (the original 1916 formula still considered a gold standard). Enter your weight in kilograms and height in centimeters to get instant results.
How it works
Mosteller: BSA (m²) = √(height(cm) × weight(kg) / 3600). Du Bois: BSA (m²) = 0.007184 × height(cm)^0.725 × weight(kg)^0.425.
Use cases
- Calculating chemotherapy drug dosages based on BSA
- Determining cardiac index (cardiac output / BSA)
- Assessing metabolic rate and caloric needs in clinical settings
- Burn area estimation as a percentage of total BSA