Body Surface Area Calculator
Calculate body surface area with multiple medical formulas
100% private. Your files and inputs never leave your device — everything runs locally in your browser.
How to Use Body Surface Area Calculator
Calculate body surface area with multiple medical formulas. No signup, no uploads, no watermarks.
- 1
Enter your numbers in the input fields.
- 2
Choose the calculation options or frequency.
- 3
The result updates instantly as you type.
- 4
Review the breakdown, chart, or schedule, and copy the answer.
Why choose Body Surface Area Calculator?
- No uploads — your files never leave your device.
- Free forever with no signup, no watermarks, and no limits.
- Works on any device with a modern browser — no installs.
- Fast, private, and built for getting the job done in seconds.
Frequently Asked Questions
What is body surface area used for?▾
BSA is used in medicine to calculate chemotherapy dosages, fluid replacement and cardiac output, because many physiological processes scale with surface area rather than weight alone.
Which BSA formula is most accurate?▾
The Mosteller formula is simple and accurate for most adults and is the most widely used. The Gehan-George formula is slightly more precise across a wide range of body sizes.
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