Top 05 Best OST to PST Converter Tool- Expert Review

In this article, we’ll talk about the most functional and Best OST to PST converter, all of which have been rigorously reviewed and approved by experts. So, let us begin our search for the best too to convert OST files into PST file format.

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MS Outlook is a popular tool for internal and external communication in business. Outlook stores its data in two file formats OST and PST. OST stores its data in your mail folder on your hard drive and you can access it in offline mode.

However, often OST files become corrupt due to virus attacks, exchange server failures, or sudden computer shutdowns. In this case, if you’ve converted your OST files into PST, you’ve already taken the first step toward protecting your important data. So, here is the list of the top 5 best OST to PST Converters to convert OST to PST file format.

Learn About 05 Best OST to PST Converter Tools

The first name to appear on the list of the best free OST to PST converters is MailConverterTools.

MailConverterTools OST to PST Converter

The OST to PST Converter is one of the best and most complete solutions for users. This is a versatile utility that can convert Outlook OST to PST, PDF, EML, CSV, HTML, and others. Additionally, this software also allows you to import your OST files into Outlook 365, Gmail,iCloud, Hotmail, IMAP, etc.


  • You can perform bulk migration of Outlook OST files into PST using this tool.
  • With this utility, users can convert OST to PDF, TXT, DOC, DOCX, DOCM, PNG, TIFF, GIF, JPG, and JSON.
  • It import OST to Gmail, Office 365, HostGator, Thunderbird, Yahoo Mail, Zoho Mail, Opera Mail, Yandex Mail, iCloud, AOL, Amazon WorkMail, GoDaddy Email, and other email providers.
  • It removes duplicate emails from a chosen OST file based on To, From, Subject, Body, and Bcc.
  • Software is highly compatible with all the major versions of the Windows Operating System.


  • The Demo version only converts 50 emails per folder.

Sysinfo OST to PST Converter

Sysinfo OST to PST Converter ranks top in the list of the best OST to PST Converter. One of the most efficient and reliable utilities that change OST to PST without any data loss with cent percent precision. This versatile tool can convert OST to PST and many other file formats. This software is also capable of exporting OST items like emails, calendars, contacts, and tasks to over 15 web- or cloud-based email clients.

Benefits of Software

  • This Microsoft OST to PST converter allows its users to add single or multiple OST files to perform the conversion.
  • It converts OST files’ emails, contacts, journals, tasks, and notes into PST files.
  • You can save your OST files into several file formats like PST, MBOX, EML, EMLX, CSV, HTML, and MHTML.
  • Allows you to import corrupted OST files into Gmail, Office 365, Thunderbird, Yahoo Mail, Yandex, HotMail, and other file formats.
  • It is supported by all versions of MS Outlook and Exchange Server.


  • It can not convert a corrupted OST file. You need to repair the file first.
  • In the demo version, you can only migrate 50 emails per folder.

Aryson OST to PST Converter

The list of the best OST to PST Converter now includes yet another tool. That converts OST files not only into PST format but more than 20 file formats and 15+ web or email clients. It results best in its precision and accuracy and also accesses your corrupted or damaged OST files.

Feature List for the of this Utility

  • This utility easily converts OST file items like contacts, journals, calendars, tasks, notes, etc. into PST format.
  • It converts OST to different file formats and migrates Outlook OST to various email clients.
  • This tool allows you to reduce your OST size by splitting it into manageable PST files.
  • This utility is highly capable to convert OST to PST without Outlook.
  • Compatible with all Windows versions and supports OST files created by any Outlook version.


  • Thunderbird installation is required for migrating OST to Thunderbird.
  • For the complete migration of OST files to Amazon WorkMail, you need to purchase the enterprise license.

Cigati OST to PST Converter

Another utility that adds feathers in the cap of  Cigati OST to PST Converter. It is a trustworthy method for converting OST to PST and many other formats. Moreover, it is a fast, efficient, and secure utility.


  • Smartly convert OST files and items into PDF, PST, EML, DOC, HTML, etc.
  • Migrates OST files into different email clients like Thunderbird, Yandex, Zoho Mail, Gmail, Yahoo Mail, and others.
  • It allows you to select multiple OST files to convert them into various image and document formats.
  • It enables you to get rid of duplicate emails that were created after OST file conversion.
  • This Outlook OST to PST converter is highly compatible with all the current versions of Windows.


  • Demo version can not convert complete OST file content.
  • Windows defender must be disabled to use this application.

DRS OST to PST Converter Tool

Last but not least, the best OST to PST converter converts OST files into PST files along with emails, journals, tasks, etc. It is one of the best converters that change OST to PST. You can use its demo version before purchasing to evaluate the functioning of the tool.


  • DRS OST to PST Converter converts OST files easily into multiple file formats like PST, PDF, MBOX, EML, etc.
  • Helps its users to import OST files into several email clients like Gmail, Yahoo Mail, Hot Mail, Thunderbird, and others.
  • One of the cheapest OST to PST Converters that can ease the task of migration.
  • Its user-friendly interface allows its users to use this utility with ease.
  • It can convert OST to PST without Outlook.


  • It can not convert corrupted Outlook OST files.
  • Apart from OST, you can not convert PST or any other Outlook data file.


In this article, I have presented the top and best OST to PST converter. The sole criteria used to rank these Microsoft OST to PST Converter is expert advice and customer feedback. These are the top 5 tools that not only provide you with the above-mentioned features but also the best round-the-clock customer support.