Check What Version of Drupal You Are Running
Updated: November 19, 2015
The version number of Drupal installed on your website is listed in a couple of places:
In the root directory of the Drupal installation, the CHANGELOG.txt (i.e, http://www.example.com/CHANGELOG.txt) lists the current version number at the top of the file:
Drupal 7.37, 2015-05-07 ----------------------- - Fixed a regression in Drupal 7.36 which caused certain kinds of content types
In the administration interface of Drupal you can see what version you are running on Logs>Status in Drupal 5 and Reports>Status Report in Drupal 6 & 7:
You can also check what versions of Drupal are running on websites using our Version Check extension for Chrome.
You can keep track of what versions of Drupal are running on all of the websites you manage with our Up to Date? app for Chrome.
Current Versions of Drupal
6.37, 7.41, and 8.0.0