BSA calculator

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weight (kg)
height (cm)
bsa =

I want to use a nomogram to determine BSA


The doctor has ordered an antibiotic on 11 y/o Billy.   The average adult dose is 250 mg.  In order to calculate pediatric doses you must first determine Billy's body surface area (BSA).  Billy is 157.5 cm in height and weighs 45 kg.  Using the example below, plug in the numbers into the calculator to determine Billy's BSA.

Doesn't work, just an example

Using the calculator, Billy's BSA is determined as 1.42 M2.


kg0.425 x cm0.725 x 0.007184 = BSA

The above formula is just one method for determining BSA.  Results with other formulas will vary.

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