Body Surface Area (BSA) Calculator
Calculate BSA with the Du Bois formula from weight and height. Free body surface area calculator.
Parameters
Enter the required details below
Ready to Calculate
Enter your parameters and click calculate to see the results here.
How to Use
- Choose Unit System.
- Enter Weight (kg).
- Enter Height (cm).
- Click Calculate to see Body Surface Area.
- Check the result. Use Reset if you want to try different numbers.
About This Calculator
Body surface area is used in some dosing and clinical indexes. This calculator uses Du Bois: BSA = 0.007184 × weight^0.425 × height^0.725. It is an estimate, not medical advice.
Frequently asked questions
How is body surface area calculated?+
Du Bois uses weight in kg and height in cm. Other formulas exist (Mosteller, Haycock); this page uses Du Bois.
Is Body Surface Area Calculator free to use?+
Yes. Body Surface Area Calculator is free and does not require an account. The calculation runs in your browser.
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