How to convert static HTML template to drupal theme Is there any tools available to convert html template to drupal theme and is there any modules that make drupal 7 theming much easier ?
There is no such tool that converts HTML to Drupal theme. But there are services where we can create some kind of Drupal theme with basic regions &amp; templates.

Some modules you can try 


Themer 6.x only
Theme developer
Skinr


Theming Drupal 6 and 7

Modules for theming

A nice screencast for a beginner 
Introduction to Theming Basics for Drupal 7