Body Surface Area Calculator
Body surface area using the Mosteller formula.
years
Formula: Mosteller: √((height×weight)/3600)
Worth Knowing
Body surface area is used clinically to dose chemotherapy, calculate cardiac index, and gauge burn extent, because many physiological quantities scale with surface area rather than raw body weight. The Mosteller formula is favored in practice simply because it's easy to compute at the bedside — its square-root form is far quicker than older logarithmic equations while staying accurate to within a few percent for most adults. This tool is for reference only and shouldn't be used for actual drug dosing.
How to Use
- Enter Gender into the first field of the Body Surface Area Calculator.
- Fill in the rest: Age, Weight, Height.
- Your result appears instantly as you type — there's no submit button or page reload.
Formula
Mosteller: √((height×weight)/3600)