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Body Surface Area (BSA) Calculator
Calculate body surface area using the Du Bois and Mosteller formulas — the standard for medical dosing.
How to use this tool
- 1Paste or type your input above.
- 2The result updates instantly.
- 3Copy the output with one click.
Frequently asked questions
What is BSA used for?+
Clinicians dose certain drugs (notably chemotherapy) by body surface area rather than weight, because BSA tracks metabolic mass better.
Is my data private?+
Yes. The tool runs entirely in your browser — nothing you paste or type is uploaded to a server.
Learn more
- Body Surface Area (BSA) Calculator: how it works
- bsa calculator tips
- Body Surface Area (BSA) Calculator FAQs