BSA Calculator
Calculate Body Surface Area for clinical dosing and physiological measurements.
kg
cm
Clinical Note
Body Surface Area (BSA) is used for determining dosages for chemotherapy, glucocorticoids, and checking cardiac index. The Mosteller formula is commonly standard due to its simplicity.
Estimated BSA (Mosteller)
1.84 m²
Select Formula
The most common formula. Simple and widely adopted.
What is a BSA Calculator?
A Body Surface Area (BSA) calculator is a medical tool used to estimate the total surface area of a human body. BSA is a more accurate indicator of metabolic mass than body weight, as it is less affected by abnormal body fat. It is widely used in clinical settings, particularly in oncology and cardiology, to calculate drug dosages and cardiac index.
How to Use This Tool
- Select Units: Choose between Metric (kg/cm) or Imperial (lb/ft) units.
- Enter Your Measurements: Input your current weight and height.
- Choose a Formula: Select the BSA formula you wish to use from the dropdown. The Mosteller formula is the most common and is selected by default.
- Review Your BSA: The main result card will instantly show your calculated Body Surface Area. You can also expand the "Compare All Formulas" section to see how different methods vary.