About this calculator

Body surface area is used in some clinical contexts. Formula results are estimates and must not be used to self-dose medication.

Formula: Mosteller BSA = √(height cm × weight kg ÷ 3600)

Frequently asked questions

What does the Body Surface Area Calculator do?

Calculate body surface area using Mosteller, Du Bois and Haycock formulas. Body surface area is used in some clinical contexts. Formula results are estimates and must not be used to self-dose medication.

Is the Body Surface Area Calculator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Body Surface Area Calculator?

Results are calculated in real time using the formula Mosteller BSA = √(height cm × weight kg ÷ 3600). Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified fitness & health professional before committing to a purchase or a job.

What inputs does the Body Surface Area Calculator need?

Enter values for: Height (cm), Weight (kg). Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Body Surface Area Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.