How it works
Fill in the 2 fields above and Body Surface Area Calculator calculates the result instantly, recalculating as you change any value. It applies the formula BSA = √(height × weight / 3600). The math runs locally in your browser — nothing is sent to a server.
Formula
BSA = √(height × weight / 3600)Examples
- Weight 70 kg, Height 175 cm → Body surface area: 1.84 m²
Frequently asked questions
How do I use the Body Surface Area Calculator?
Enter your values in the 2 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.
What formula does the Body Surface Area Calculator use?
It uses BSA = √(height × weight / 3600). The calculation is performed in your browser using standard, well-established math for accurate results.
Is my data private?
Yes. The Body Surface Area Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Body Surface Area Calculator free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on calculators and the rest of the platform, you can use it as often as you like.
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