Body Surface Area Calculator
Calculate body surface area (BSA) using the Mosteller and Du Bois formulas — used in clinical dosing.
Two formulas
Mosteller: BSA = √(H · W / 3600) · Du Bois: BSA = 0.007184 · H0.725 · W0.425 (H in cm, W in kg, BSA in m²).
Frequently Asked Questions
Is the Body Surface Area Calculator free to use?
Yes, the Body Surface Area Calculator is 100% free to use. There are no subscriptions, no sign-ups, and no hidden fees.
Is my data safe when using the Body Surface Area Calculator?
Absolutely. All calculations performed by the Body Surface Area Calculator happen locally in your web browser. We do not store, track, or transmit your inputs or results to any server.
How accurate is the Body Surface Area Calculator?
Our Body Surface Area Calculator uses industry-standard formulas and methodology. You can view the exact formula and calculation logic used in the methodology section above to verify the math yourself.
Can I use the Body Surface Area Calculator on my mobile phone?
Yes! The Body Surface Area Calculator is fully responsive and works seamlessly on all devices including smartphones, tablets, and desktop computers.