Body Surface Area Calculator for medication doses

Calculates BSA for medication doses and includes descriptive statistics.

Step 1. Enter Height & Weight then click "Calculate".


or
 
 using Formula: 
click for info re: Body Surface Area formulas
 

Body Surface Area = m2

 
 
 

Step 2.  Safety Check.  Set Age and Gender, then re-Calculate.

 
Body description: 
 
 
 

Step 3. Optional Medication Dose Calculator

Multiply BSA m2  x  Dose/m2

equals

 
 
 

Additional Statistics:

Height is at:  Compared to
others of same Age
Weight is at: 
Weight is at:  Compared to
others of same Height

Other formulas:

Body Mass Index: kg/m2

Lean Body Weight: 

Ideal Body Weight: 

 
 
 

 for default units
( lbs/kg, in/cm) and calculation formula.

 

Please add a bookmark for this page
to add it to your favorites.

BSA is a measurement used in many medical tasks.  Various Body Surface Area formulas have been developed over the years, originally by Dr.s  Du Bois & Du Bois,  followed by Gehan and George, Haycock, Boyd and Mosteller.  These formulas all give slightly different results.  It is probably not worth the trouble to debate about which formula may or may not be slightly better.  A bigger issue is lack of standardization. The Mosteller formula is gaining support as a common standard because it is much simpler and can be memorized and easily calculated with a hand-held calculator.

 
 
DrHalls
Hi, and welcome. This was my first calculator and the first page on my website in 1999.
Tyler
New colors in November 2014. You should be proud. This BSA calculator is used around the world.
DrHalls
Thank-you. Email me with feedback about the changes.
 
 

 

Some of you will prefer the old BSA calculator, which fit better onto a standard computer monitor. But it looked quite old and I was forced to change the layout, into a single column and make it responsive for use on cellphones. I've used this redesign opportunity to show off my soft pastel colors style (which I made myself), and introduce the Moose. Back in 1999, there was confusion about BSA and people were always looking up- and debating- the formulas. Nowadays the internet brings calculators like this to us instantly, and we just get our work done a little faster.

This calculator DOES HAVE some WEIRD behavior, if you enter weight or height values that are very large or small. It either shows error messages or changes the values. Way back in 1999 I thought that was a good safety check, but I'm having second thoughts now. I may remove or alter that to be less annoying.

What about decimal points? My calculator shows 2 decimal points, and that was considered fine when I created it. But if 3 decimal points is becoming a highly desired feature, please let me know.

DrHalls

Hi there! I'm Dr. Halls, and I am excited to introduce you to the Talking Moose.

The Moose is software, a 3D talking character on your computer.

It's kindof famous for telling jokes, but does a lot more than that.

You can find video of the moose on my Google+ page or Youtube channel or info about me on my LinkedIn page.

Please click to visit: the Talking Moose project website.



End of page Navigation links: Halls.md home  or  Back to top  

A like would be nice. or Share? I'm late to facebook. Please help my 'Likes' to catch up.

Copyright © 1999 - present.  Steven B. Halls, MD   .   1-780-608-9141   .   steve@halls.md