Not sure what all this "CGI", "chmod", "FTP", and "system path" stuff means?
Read the Frequently Asked Questions ("FAQ") list!

Scripts for Educators: Free Perl/CGI programs since 1996


Perl/CGI Body Mass Index calculator


Need Help?
Try the FAQ!
Hit the Forum!
Contact Me!

Programs & Scripts 


Make Your Own..
Web Page
Page Counter
Email form



Information Lookup
SillySearch (site search)


Other scripts


Other Resources

About this Site
Who's Kristina? :-)

Help & Support
Getting started
Check the FAQ!
Discussion forum
Request Support
Mailing Lists

Offsite Resources
Links and other stuff
Web Hosting providers
Online tutorials
Custom Programming
More Scripts (HotScripts)
Sites for Teachers

Support This Site!
Donate - not just money!
Buy from VisualPeace
Buy from Everything's Online!
Buy from MonsterMadness
Buy from


[Demo] [Who's using?] [System Requirements] [Download!] [Bug Fix Announcements] [Changelog] [License]

Program Summary

[Version 1.0 Released 11/06/2004]

SFEBMICalc is a simple Body Mass Index calculator. If a user enters their height (in centimeters or inches) and their weight (in kilograms or pounds), the program will return their Body Mass Index. You can configure it so that either Pounds/Inches or Kilograms/Centimeters is the default, and even change the spelling of Centimeters if you like.

I think it's interesting to put many different values in there to see what differences in weight correspond to differences in Body Mass Index. With the health problems I've experienced over the last few years, I've become very interested in nutrition, diet, and fitness (although not so much in weight loss, since my illness takes care of that for me! hehe!). BMI is just one of the tools that I've used to get information on my own health status as concerns my weight. I've also had some requests for more calculators like this from various nutrition students, so this is the first one.

It should be noted that BMI isn't completely accurate in predicting health risks: highly muscular people may show up as "overweight" or even "obese," whereas people with a lower weight but a high body fat percentage may show up as "normal," and yet be unhealthily "overfat." For a good number of people, though, it can at least give an indicator. Another thing that is configurable is the "About BMI" text in the little popup window, so that you can explain this to your users in an appropriate manner.



Working Demo

You can try out a working version of SFEBMIcalc here. It's a very simple script that doesn't do much other than calculate the BMI, but it's a fun little thing.


Who's Using SFEBMIcalc?

 If you've gotten SFEBMIcalc to work, send me the address of your website and I'll post a link to it.

Well, it's a brand new script, so no one but me is using it as far as I know! If you have it running on your site, drop me an email and I might link to you here!


System Requirements

The web server where this script will be installed must have Perl 5.000 or higher. Scripts that send email require that "Sendmail" or "qmail-inject" be available on Unix/Linux-type systems. Scripts that send email under Windows-based systems require use of the Socket Perl module ( All scripts may require the Perl CGI module, .

This script is NOT supported on the following web hosting providers:

Also, sorry, but the scripts are not supported under mod_perl, PerlEx, or speedy_cgi as I don't have any way to test them in that environment. :-(

You must be able to execute cgi programs on your web server. If you're not sure whether you have permission to do this, or are not sure how to configure the files, please ask your system administrator, or check the web pages of your web hosting provider for Help or Support information. For a free web hosting provider who supports CGI scripts, or low-cost web hosting providers, you can try looking at the "Some Places to Host your Website" page I've put together.

The web server must support both the GET and POST request methods. (Ask your hosting provider about this if you're not sure.)

Please remember: you get what you pay for, and free web hosting services are often worth what you pay for them.



But first, the obligatory plea for funding. :-)
(Scroll down if you don't want to read this part. You do NOT have to give money to download these scripts!)

Like the scripts? Give me a dollar, or say thanks! 

If you like the scripts, you can send me cash through PayPal, Amazon, or through snail mail or you can show your support in other ways. Remember: only about one out of 100 people who download the scripts even says "Thanks." :-)

All the files you need are contained in these packages. Download it in the format you wish.

Gzipped Tar format: sfebmicalc.tar.gz
Zip format:

On a Unix-type system, if you have console or command prompt access, you may unzip the tar.gz file by typing 'gunzip < sfebmicalc.tar.gz | tar -xvf -'. If you're not very familiar with Unix, you may want to ask someone who is to help you. The latest version of Stuffit for the Mac will also handle tar.gz files.

If you have MS Windows, there is a program called WinZip (available at TuCows) which will uncompress and de-archive tar/gz files as well as Zip files.

The package contains the following files:

the actual program.
The README file (README.sfebmicalc)
contains information on how to get started using the program. READ THIS before you get started!


Bug Fix Announcements

I strongly recommend that you sign up here for update and bug fix announcements about this script. I will not spam you with advertising: I just want to make sure you have the latest fixes. :-)

The program will send a confirmation message to your email address when you sign up. In order to get on the announcement list, you MUST click on the confirmation link contained in that email message. This is to protect you from someone signing you up as a joke, and to protect me from being accused of spamming. Since update announcements are sometimes few and far between, sometimes people forget that they've subscribed and report me for sending junk mail. Luckily, the system logs the address, time, and date of everyone who signs up so that I can prove I'm only sending to people who asked for it. :-)

After a major release, you may get one or two messages a week. Mostly, though, I'm afraid it's less than once a month. 

You may also sign up for announcements about other scripts on the main Scripts for Educators Mailing List page. 

This list is ONLY for announcements specifically about SFEBMIcalc: