Body Surface Area Calculator
Calculate Body Surface Area (BSA) using the Mosteller formula based on weight and height.
Published by:
isCalculator Editorial Team
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How to use this tool?
This calculator estimates your Body Surface Area (BSA) using the Mosteller formula.
- Enter your Weight in the first field. Use the dropdown to select kg or lb.
- Enter your Height in the second field. Use the dropdown to select cm, ft, or in.
- Click Calculate to see your BSA in square meters (m²).
- Click Clear to reset all fields and start over.
Note: All values must be greater than zero. Invalid inputs will show an error.
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Frequently Asked Questions
Body Surface Area (BSA) is a measurement of the total surface area of the human body. It is often used in medical contexts for drug dosing and assessing metabolic mass.
This calculator uses the Mosteller formula: BSA (m²) = √(weight(kg) × height(cm) / 3600). It is a widely accepted and simple method.
You can enter weight in kilograms (kg) or pounds (lb), and height in centimeters (cm), feet (ft), or inches (in). The calculator automatically converts to metric for the calculation.
