Add account\
- Tap the Settings on your iPad’s home screen.\
- Tap Mail, Contacts, Calendars.\
- Tap Add Account….\
- Select Microsoft Exchange.
Enter Your Account Info\
- In the Email field, enter your full Google Account email address.
If you use an \@googlemail.com address, you may see an “Unable to verify certificate” warning.\ - Leave the Domain field blank.\
- Enter your full Google Account email address as the Username and your Google Account password.\
- Tap Next at the top of the screen. Choose Cancel if the Unable to Verify Certificate dialog appears.\
- Enter m.google.com in the new Server field.\
- Tap Next at the top of the screen again.\
- Choose the Google Calendar services to sync.
To delete all the existing Calendars on your iPad, uncheck the “Keep on my iPhone” option.\ - Synchronization will begin automatically if you have Push enabled on your device. Wait seconds to start a sync for the default calendar.
Enable Google multiple calendars\
- Goto http://www.google.com/calendar/iphoneselect. Login if required.\
- A web page opens with checkboxes for each of your calendars.\
- Select your calendars for sync’ing. DONE!
Thanks to
http://apple-ipad-tablet-help.blogspot.com/2010/03/how-to-sync-google-calendar-with-ipad.html
for describing the first steps.