This article will guide you on how to check bandwidth usage for a particular website from your cPanel.
1. Login to your cPanel
2. Select the Bandwidth option under the Metrics Section
3. You will find a Graphical representation of the bandwidth usage on a monthly basis.
4. Scroll down to the bottom of the page and you can find the Bandwidth usage for HTTP,IMAP, POP3, SMTP, & FTP services.