An EDB to PST Converter is a software tool that allows you to convert Exchange Database (EDB) files to Outlook PST format. The EDB file is the main database file for Microsoft Exchange Server, and it contains all the mailboxes, emails, contacts, calendars, tasks, and other items stored on the Exchange Server. There are several EDB to PST converter tools available in the market, both free and paid. Some of the popular ones are Stellar Converter for EDB.

When choosing an EDB to PST converter tool, you should consider factors such as the size of the EDB file, the level of corruption, the speed of conversion, and the features offered by the tool. It's also essential to ensure that the tool is compatible with your version of Exchange Server and Outlook.

However, before using any EDB to PST converter tool, it's recommended to take a backup of your original EDB file, as data loss can occur during the conversion process.