Body Surface Area Calculator
Introduction & Importance
Body surface area (BSA) is a critical parameter in medicine, pharmacy, and physiology. It’s used to calculate drug doses, estimate metabolic rates, and more. Accurately calculating BSA is vital for patient safety and treatment efficacy.
How to Use This Calculator
- Enter your height in centimeters.
- Enter your weight in kilograms.
- Click ‘Calculate’.
Formula & Methodology
The most common formula to calculate BSA is the Du Bois formula:
BSA (m2) = (Weight (kg) ^ 0.425) * (Height (cm) ^ 0.725) * 0.007184
Real-World Examples
| Height (cm) | Weight (kg) | BSA (m2) |
|---|---|---|
| 170 | 70 | 1.85 |
| 160 | 55 | 1.68 |
| 180 | 85 | 2.21 |
Data & Statistics
| Age Group | Average BSA (m2) |
|---|---|
| Children (1-10) | 0.6 – 1.2 |
| Adolescents (11-18) | 1.2 – 1.8 |
| Adults (19+) | 1.7 – 2.2 |
Expert Tips
- Always use the most recent and accurate measurements for height and weight.
- Consider using other BSA formulas if the Du Bois formula isn’t suitable (e.g., for children or specific ethnic groups).
Interactive FAQ
What is the BSA of an average adult?
The BSA of an average adult is approximately 1.8 – 2.0 m2.
How does BSA change with age?
BSA increases with age until adulthood, then remains relatively stable.
For more information, see the article on BSA calculation methods from the National Institutes of Health.