How do I check Airtel Broadband connection usage? How do I check my high speed data transfer limit? How do I find out how many GBs are left in my airtel account?
You can easily check your Airtel Boardband connection usage using the following steps:
Update: You can simply get all the details by
visiting this url without login into your account:

Airtel Broadband Find Out GBs - Gigabytes Left In Your Account ( Data Transfer Limit )
Step # 1: Login To MyAirtel
Click on My Account > Register now
You need to provide your telephone number and other information. Just follow on screen instructions to register yourself.
Step #2: Check Usage
Login at http://airtel.in/ > My Account
Once logged in click on Account Information:

Fig.01: Airtel Account Information
Click on your Airtel DSL number.
You will get two options as follows:

Fig.02: Airtel Broadband Usage
Click on View Unbilled Amount to see current months data usage (information is in KB):

Fig.03: Airtel Broadband Total Data Usage

Fig.04: Airtel Broadband Tracking DSL Usage
You can convert KB into MB by entering Google query as follows (e.g.
click here):
XXXXXX KB in MBOR
XXXXXX KB in GB