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SysTools PST Upgrade

Tool to Convert Outlook UNICODE PST to ANSI PST & ANSI PST to UNICODE PST File Format

(Average Rating 4.8 Based on 22 Reviews)
  • Upgrade MS Outlook PST Files from: ANSI PST to UNICODE PST Format
  • Downgrade PST Files format from UNICODE PST to ANSI PST File Format
  • Convert Emails, contacts, calendars, tasks, notes, journals & all items
  • Supports Batch Conversion : Upgrade or Downgrade multiple files at once
  • No 2GB PST File Issue: Create an entirely new & healthy PST File
  • MS Outlook Installation is Necessary to perform the conversion

Free Live Demo* - SysTools PST Upgrade Tool Fully Secured Download Version.

Expert Reviews to Convert Old PST File to New Format

How Software Helps User to Accomplish Their Goals?

Key Features of SysTools PST Upgrade Software

convert old PST file to new format


MS Outlook PST file upgradation can be done in batch using the PST Upgrade tool. This program allows you to convert PST file of MS Outlook 2000 / 2002 format into newer MS Outlook versions of PST files i.e. 2003 / 2007 / 2010 which are in UNICODE format.

ANSI PST to UNICODE PST conversion


If you are using MS Outlook 2010 / 2007 / 2003 then the default PST file format will be UNICODE. In order to use such a PST file in older Outlook versions like: MS Outlook 2000 / 2002 you need to downgrade UNICODE PST to ANSI PST format.

convert old PST to new

Complete PST Conversion Tool

Both Upgrading and downgrading of PST files will create a new PST of either ANSI or UNICODE type. And these, PST files will have all the items from the source PST file namely: emails, contacts, calendars, tasks, notes, journals etc. You will not lose any data or information during this conversion.

all outlook versions supported

Batch Conversion of PST Files

Software allows you to add multiple PST files or add folder having multiple PST files. In this way, you can export multiple Outlook PST files altogether. Also, there is a button available to directly remove any PST file from being upgraded or downgraded.

support ANSI to UNICODE

Support ANSI & UNICODE Format

Software supports ANSI as well as UNICODE PST files. But if you provide a UNICODE PST while upgrading PST or an ANSI PST while downgrading PST then faulty results will be received. In both cases, due to the selection of a wrong PST software will generate an alert message reporting about the same.

upgrade PST file

Convert & Save PST File

After converting PST, you can save the file at any desirable location on the conversion machine or an external storage device attached to it. It is also possible to create a new folder from software panel itself and save the data into it. This will help you manage upgraded PST files more easily.

Outlook ANSI to UNICODE PST Conversion Specifications

Know More & Download PST Upgrade Software

Software Download

Size : 3.0 MB

Version : 2.5

MD5 : d1d981901f6279c4e1e216298a5e294b

Trial Limitations

Trial version of PST Upgrade software upgrade or downgrade first 15 emails from each Outlook folder present in PST file.

System Specifications

Hard Disk Space
15 MB of free hard disk space

512 MB of RAM (1 GB is recommended)

1 GHz processor (2.4 GHz is recommended)


  • Microsoft Outlook (32 Bit) should be installed and should be configured properly for any valid or dummy profile/account
  • .Net framework 2.0 or Above should be installed
  • If you are using Windows 11 / 10 / 8.1 / 8 / 7 / XP / Vista then please launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows XP / Vista / 7 / 8 / 8.1 / 10 & all below version (32 Bit & 64 Bit) Operating System
  • MS Outlook ‐ 2000, 2003, 2007, 2010, 2013, 2016 & 2019 (32 Bit) Version




Electronic Delivery


Request For Software Customization

If you need to customize Outlook PST Upgrade or need additional features then, Request Quote.

Convert Old PST to New PST - Order Now
Get an Overview of Outlook PST Upgrade Order Features – DEMO and Licensed Version
Features DEMO Version FULL Version
Add PST file
Add PST Files Folder
Windows 10 & All Other Previous Windows Version Supported
Outlook 2019 & All Previous Version of MS Outlook Support
Browse Destination Location
Upgrade or Downgrade PST Files First 15 Emails / Folder All Items
Cost FREE $49

Frequently Asked Questions

Common Querys to Convert Outlook ANSI to UNICODE PST

Can you please list the steps to upgrade UNICODE PST to ANSI PST or ANSI PST to UNICODE PST?

By using Outlook PST Upgrade software, users can easily upgrade PST file in some simple steps:

PST Upgrade software

Simple 5 Steps to Convert UNICODE PST to ANSI PST or ANSI PST to UNICODE PST:

  • Step 1: Initially install SysTools PST Upgrade tool
  • Step 2: Select the File(s) or Folder and click on OK button
  • Step 3: Now Select Format (UNICODE PST to ANSI PST or ANSI PST to UNICODE PST)
  • Step 4: Lastly, click on Start Button to Upgrade or Downgrade PST Files
Yes, software is now compatible with Windows 10 and older versions.
You can upgrade multiple PST files in one go. You can add multiple files by Add Files option or you can also add a folder containing multiple PST files by Add Folder option.
Yes, Outlook installation is a must to use PST Upgrade. Outlook 2003 or above version should be installed and configured properly while upgrading PST from ANSI to UNICODE format.
Yes, software has both features; ANSI to UNICODE as well as UNICODE to ANSI.
Yes, software preserves all the Meta data, properties and folder structure while upgrading as well as downgrading PST files.

What Customers Are Saying

SysTools PST Upgrade Verified Purchase Reviews
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