Body Surface Area (BSA) Calculator
Calculator ToolsBSA by the Mosteller and DuBois formulas
Embed this tool on your websiteFree
- Choose how tall the frame should be.
- Press Copy code.
- Paste it into your page, blog, WordPress or Notion HTML block.
The tool runs inside your visitor's browser, nothing is uploaded, and a small "Powered by ToolCloak" line stays under it. The second line (script) is optional: it makes the frame fit the tool's height.
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History
All history →Body Surface Area (BSA) Calculator — at a glance
Get your body surface area in square metres.
How to use it — step by step
Height in centimetres and weight in kilograms.
Enter your values
Fill in the fields. Default numbers are shown so you can see how it works.
Press Calculate BSA
The answer appears at once as large result cards.
Copy or share
Copy the result, or share a link that opens with your numbers filled in.
Pro tips
Small things that make the result better.
Quick facts
Frequently Asked Questions
What is BSA used for?+
Doctors use it to scale some medicine doses and to compare heart and kidney measures.
Can I use it to dose medicine?+
No. Doses must be decided by a doctor or pharmacist.
Is my data safe?+
Yes. Everything runs inside your own browser. Your text, files and images are never uploaded to any server.
Is this tool really free?+
Yes — completely free, no signup, no watermark and no usage limit.