Top 2 Ways are Converting Old ANSI Files into Unicode PST files?

If you have old ANSI files that you want to convert to Unicode PST files, there are several options available to help you accomplish this task. In this blog post, we’ll discuss some of the most popular software tools for converting ANSI files to Unicode PST files and provide some tips on how to choose the best one for your needs.

An ANSI PST file is what?

First, let’s start with some background information on ANSI and Unicode. ANSI is an older character encoding standard that is used to represent text in the English language and some other Western European languages. This format was introduced with the release of Microsoft Outlook 97 and was used until the release of Outlook 2003. The ANSI PST file has a maximum file size of 2GB and can store up to a few items. One of the main limitations of the ANSI PST file is its size limit.

A Unicode PST file is what?

Unicode, on the other hand, is a more recent character encoding standard that supports a much wider range of languages and characters, including non-Latin scripts like Arabic, Chinese, and Cyrillic.

A Unicode PST file is a type of data storage file format used by Microsoft Outlook to store email messages, contacts, calendar events, and other data. The Unicode PST file format also allows for larger file sizes, which can be important for users who receive or send large attachments or have a large volume of email messages. Unicode PST format supports up to 20 GB for Outlook 2003 and later versions and up to 50 GB for Outlook 2010 and later versions. And the latest Outlook version has unlimited Unicode PST files.

Best Two Methods to migrate Old PST data file to New PST file.

Methods 1:- Manual Stages

Here are the manual steps to convert an ANSI PST file to a Unicode PST file:

  • Open Microsoft Outlook on your computer.
  • Click on the File menu in the top left corner of the screen.
  • Click on Open & Export, then click on Import/Export.
  • In the Import and Export Wizard, select Export to a file, then click Next.
  • Select Outlook Data File (.pst) as the file type to export, then click Next.
  • Select the ANSI PST file that you want to convert, then click Next.
  • Choose a location to save the new Unicode PST file, then click Next.
  • Select the option to replace duplicates with items exported, then click Finish.
  • Enter a password for the new Unicode PST file if desired, then click OK.

The conversion process will begin, which may take some time depending on the size of the PST file.

Methods 2:- Direct Method to Upgrade ANSI data file to Unicode PST file.

Use a PST upgrade program. It installs all Windows OS versions without difficulty. This software is user-friendly and is simple to use for everyone. It instantly converts sound ANSI files into Unicode PST files. Utilization of light. It generates PST files in Unicode of any size. Emails, events, contacts, tasks, notes, attachments, and messages are among the financial aspects it has.

Use these methods to convert ANSI Outlook PST files into Unicode PST files:

Step 1: Download the SYSessential PST upgrade program as the first step.

Step 2: Set up the application to run on Windows by installing it and configuring it.

Step 3: Browse to add one or more PST files.

Step 4: Remove those PST files if you don’t want to upgrade them.

Step 5: Specify the output route for your upgrade data.

Step 6: To get results, click the “Converting Now” tab.


In conclusion, while the ANSI PST file format served as the standard for storing Outlook data for many years, it has now been superseded by the more advanced Unicode PST format. Users who are still using older versions of Outlook may still be using the ANSI PST file format, but it is recommended to upgrade to the Unicode PST format to take advantage of its many benefits.