Body Surface Area Calculator
Calculate total surface area of a human body using various formulas
Table of average BSAs
| Category | ft² | m² |
|---|---|---|
| Newborn child | 2.69 | 0.25 |
| Two-year-old child | 5.38 | 0.5 |
| Ten-year-old child | 12.27 | 1.14 |
| Adult female | 17.22 | 1.6 |
| Adult male | 20.45 | 1.9 |
About Body Surface Area (BSA)
BSA is often used in clinical purposes over body weight because it is a more accurate indicator of metabolic mass (the body's need for energy). Metabolic mass can be estimated using fat-free mass, where fat-free mass is all of a person's body mass that does not include fat.
Clinical Applications
- Determining cardiac index
- Calculating chemotherapy dosages
- Estimating metabolic mass
Popular BSA Formulas
Du Bois formula:
BSA = 0.007184 Ã W0.425 Ã H0.725
Mosteller formula:
BSA = 0.016667 Ã W0.5 Ã H0.5
Haycock formula:
BSA = 0.024265 Ã W0.5378 Ã H0.3964