Body Mass Index (BMI) Module - health weight range calculator based on gender, height & weight.
The module is available in two styles. In both styles you may select the width for each part or selecting show/hide for the parts you want to hide.

Frontend Page

BMI Calculator

Sex - Male / Female
Height - inch, cm, meters
Weight - Ibs, Kg

Results

BMI - kg/m2
Surface Area - m2
Lean Weight - kg and lbs
Ideal Weight - kg and lbs

Backend

Style - One or Two
Hide detailed results - Yes/No ( for style two)
Top text - Text field
Search form width - 100%, 80%, 75%, 70%, 50%, 30%, 25%, 20%
Results width - 100%, 80%, 75%, 70%, 50%, 30%, 25%, 20%
Show info area - Yes/No
Info width - 100%, 80%, 75%, 70%, 50%, 30%, 25%, 20%

Read more http://feeds.joomla.org/~r/JoomlaExtensions/~3/VvLr0758mNQ/body-mass-index