1Password exports it's data as a '1Password Interchange Format', or 1PIF for short. This data format can be imported directly into the main 1Password application.
Note that this data format is unencrypted so be sure to keep it in a secure place and securely delete it when it is no longer needed.
To begin the export, enter your Master Password and then press the Export button.
You can choose to export all your data or just the items that have not been synced to the main 1Password application.