How to Migrate ANSI PST to Unicode PST Files?

As a result: An ANSI PST file is created using Outlook Express, whereas a Unicode PST file is created using MS Outlook. As a result, many people encounter problems while trying to view ANSI PST on the most recent version of MS Outlook. Therefore, are you the one looking for a simple method to Migrate ANSI PST to Unicode PST Files Format? If so, you have come to the correct place. In addition to discussing the simple method for upgrading Outlook PST files in this article, we have also discussed the benefits and reasons for doing so. There are two quick and easy techniques to convert any PST file from an ANSI to a Unicode PST format. Either manually or via Upgrade PST Software, you can convert data.


Need to Migrate ANSI PST to Unicode PST Files

  1. For Outlook users, a Unicode PST file is a superior option because it offers more storage space for mailbox data than an ANSI file, which is limited to 2 GB.
  2. The ANSI PST file has a maximum size limit of 2 GB, which is really quite a little, thus there are increased chances of corruption.
  3. Outlook performance suffers when using an Oversized ANSI PST. By converting ANSI to Unicode format, you can upgrade Outlook and get free of all these limitations and problems.

How to Convert From ANSI PST to Unicode PST Format in Microsoft Outlook

The ANSI PST file can be converted to a Unicode PST file in two different ways. You have the option of using a professional tool right away or using the manual method to upgrade ANSI PST.

Manual Upgrade Procedure for ANSI PST

  • Launch the Outlook client on your computer, and then create a new PST file.
  • Once your PST file has been produced, hit Ctrl+6 or go to Folder List in the Navigation window. This will simplify the process of transferring the folders for the Calendar, Contacts, Journal, Tasks, and Notes.
  • All of the mailbox files can now be transferred from the ANSI PST file to the freshly made Unicode PST file. Additionally, you can utilize the Drag & Drop tool to copy or relocate the folders to the freshly produced Unicode PST file.
  • The final product will save the ANSI PST mailbox content in the new Unicode PST file format.

You can store between 20 and 50 GB of mailbox data with this method.

Upgrade PST Tool as a professional solution

You can try a specialized tool to convert Outlook PST from ANSI to Unicode format. To export ANSI PST to Unicode format, download a free copy of Outlook ANSI to UNICODE Converter Software. A feature called Upgrade is also included in this tool. It’s a quick and secure way to use the ANSI to Unicode Converter Tool without endangering the integrity of the source files.

One of the MS Office products, Microsoft Outlook, is more than just an email client programmer. Moreover, it is a personal information manager that offers users a simple and sophisticated email environment so they may send and receive emails and organize them with ease. Microsoft Outlook also offers a calendar, contact manager, note-taking capability, task management, journaling, and online surfing.

In order to keep all of your mailbox information, including email messages and other data like a calendar, MS Outlook generates an Outlook data file on your local system. Duties, etc. PST (personal storage table) relates to that Outlook data file.

Outlook PST File Types (ANSI PST & Unicode PST)

There are mainly two sorts of Outlook files; PST files can be saved in either ANSI or Unicode based on the version of Outlook. The PST file in Outlook 2002 and previous versions is saved in ANSI format. The PST file in Outlook 2003 and later versions are saved in Unicode format. Only 2 GB of mailbox data can be stored in the outdated ANSI format.

Unicode, on the other hand, is a product format with a maximum size range of 20 GB to 50 GB. Additionally, Outlook 2003 and later versions do not support opening ANSI PST files. Similarly, MS Outlook 2002 and earlier versions cannot open a Unicode PST file. Therefore, if a user wants to Migrate ANSI PST to Unicode PST Files, they should utilize the procedure listed below or a reasonably priced ANSI to Unicode Converter.

What differentiates ANSI PST from Unicode PST?


  • A very old character encoding is ANSI.
  • ANSI software is slower.
  • Fixed-width encoding is used by ANSI.
  • On the most recent versions of Outlook, ANSI Code is incompatible.


  • The currently accepted standard is named Unicode.
  • Unicode applications run more quickly
  • Both fixed and variable widths are used in Unicode.
  • On the newest versions of Outlook, Unicode PST is compatible.

What are the PST Files’ Limitations?

The maximum size for ANSI PST files has been achieved, as has Migrate ANSI PST to Unicode PST Files. Users today rely primarily on email clients, which allows the space to become saturated with millions of PST files, making both ANSI and UNICODE PST vulnerable to corruption. Users of Outlook have major issues, chief among them poor Outlook performance, even if a PST file does not exceed its maximum size but is likely to do so. If you frequently use Outlook in your everyday life, 2 GB is also dreadfully inadequate for you. Therefore, moving from ANSI to Unicode becomes essential.

How does the application operate?

The user must adhere to the instructions listed below in order to increase the size of the Outlook PST file using our powerful Upgrade PST Tool. Let’s examine these actions:


  • To start, download and set up the Outlook ANSI to Unicode Converter on your Windows machine.



  • Add the files
  • Have a look at the selected files


  • Select the output location
  • Click on the ‘start converting’ button



Converting from ANSI PST to Unicode PST can be done in two different ways. The first trick is manual and doesn’t cost a thing, but it does take Outlook experience. There may be a potential for PST file corruption if the user is not proficient with Outlook. The other approach is the clever and efficient PST. The third-party software is not only exceedingly efficient but also offers additional features that make the translation incredibly quick for ANSI PST to Unicode conversions without taking a lot of the user’s time.

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