How to use this body surface area calculator
Enter the requested values above and select Calculate. The result updates immediately on the page, so you can change one value and compare different scenarios without leaving the calculator.
Formula and method
Mosteller BSA = √(height(cm) × weight(kg) ÷ 3600).
Example
The result is expressed in square meters and is a general mathematical estimate.
What this calculator is useful for
Estimate body surface area using the Mosteller formula. It is designed for quick estimates and everyday problem solving. When a calculation affects a contract, tax filing, medical decision or other high-stakes situation, verify the result with the appropriate professional or authoritative source.
Frequently asked questions
What does the Body Surface Area Calculator calculate?
Estimate body surface area using the Mosteller formula.
How does the calculation work?
Mosteller BSA = √(height(cm) × weight(kg) ÷ 3600).
Is this calculator free?
Yes. ERICH Calculators is free to use and no account is required.