Body Surface Area
Calculate body surface area using Height (cm), Weight (kg). See the method, result interpretation, practical checks and related calculators in one place.
Formula / method
Math.sqrt(height*weight/3600)
For general informational use only; not medical advice.
How to use
Enter measurements using the units shown and use recent, representative values.
What this calculator answers
The Body Surface Area uses Height (cm), Weight (kg) to calculate the requested result. The core method is Math.sqrt(height*weight/3600). This makes the assumptions visible so you can check whether the inputs match your situation.
How to get a useful result
Enter measurements using the units shown and use recent, representative values.
How to interpret it
Health and fitness formulas are screening or planning estimates, not a diagnosis or individualized medical recommendation.
Before relying on the number
Recheck unusual inputs, confirm units and compare the result with any official quote, statement, specification or rule that applies to the real decision. Small changes in rates, time periods or measurements can materially change some results.