1. By using the Administration interface
Inside the admin interface, at the bottom right of each page, you can see the current version of WordPress.
You can also find the newer version of WordPress in the At a Glance box on the main dashboard page.
2. By checking the Version.PHP file
If you do not have access to the administration interface, then you can check the current version of WordPress using the version.php file. Follow the given steps to find out the version-
- Go to the directory where you have installed WordPress. Then go to the wp_includes directory. You can go to the directory by using SSH or file manager from cPanel or via FTP client.
- Then open the version.php file using any text editor. Search for the variable named $wp_version. You can find the version of WordPress here. For instance, the version of WordPress in the example below is 5.4 :
$wp_version = '5.4';