5 Best OST to PST Converter – Detailed Comparison

Published On - November 29, 2022 by Henry Bray | Reading Time: 5 minutes

OST and PST are both Microsoft Outlook’s file formats; however, both have different roles. OST stores data on the server and PST is stored on the local disk. Apart from this, several differences in both file formats make them crucial. In this detailed comparison guide os OST to PST converter, I’ll describe why you should move the OST file to PST format and a few scenarios which left only OST to PST conversion a choice. So, let’s start with the following:

Why Should you store a replica of OST in PST format?

There are multiple instances for which you’ve to convert OST to PST, and the only way to convert is by using an automated OST to PST converter tool. A few of the instances are listed below:

  • OST file is a server file, and once it gets disconnected from the server, you cannot access it as it becomes corrupt or inaccessible. And the only way the access it then is by converting it into PST format.
  • By doing OST to PST conversion, you can reduce your OST file size, and if you use any cloud data storage will save you some bucks.
  • PST file is considered better than OST in all parameters, such as Security, data management, portability, etc.

Also, some OST to PST converter allows recovering the deleted data of OST files by converting them into PST format.

5 Best OST to PST Converters 

Now let’s move to our main topic of the best Converter available to convert OST to PST. We’ve kept almost every aspect in mind before ranking the software.

1. Regain OST to PST Converter

My personal favorite and most-effective advanced converter tool. The tool is coded by Regain software, a well-known name for conversion utilities. There are several reasons which make this tool stand above in this listicle. Take a look at some of the features it offers:

  • You can add several OST files in a single go to convert them into PST format.
  • The software can recover corrupt and orphaned OST files in just a few clicks.
  • The software doesn’t impose any bar on the adding size of the OST file. Hence, you can add as big an OST file as possible.
  • Also, you can preview added OST file data before conversion and after scanning the OST file.
  • You can convert OST files into PST, MSG, PDF, MBOX, vCard, TGZ, HTML, and ICS file formats.
  • Apart from these multiple file formats, you can move OST files into Office 365, Live Exchange, Yahoo mail, Hotmail, Amazon Workmail, etc.
  • It offers a PST split option to create the resultant PST file of the desired size.
  • You can also select desired emails/folders to convert from OST to PST format.


The Regain software comes in three license variants. All of them offer the same features but have installation limits.

  • Home license for $39 and can activate it in 2 systems.
  • A corporate license costs $79 and can activate in 20 systems.
  • Technical license for $149 and has no system restriction; you can activate it in multiple systems.

(Note: All these licenses will be valid for a lifetime and allows batch conversion).

What makes this tool top the list:

  • It is the only tool that offers all features, including conversion to different files and import to a cloud server, even in a home license; no other tool allows this.
  • Moreover, Regain OST to PST converter is the only tool that allows importing OST files into Gmail, Yahoo mail, and Amazon Workmail service.
  • Last but not least, it is the most cost-effective software available with all the required features.

Free Download100% Secure Buy NowPrice: $39

2. Stellar Converter for OST

Expertly crafted, this OST to PST converter is another example of the genre’s highest quality. Stellar Data Recovery Inc., founded in 1993, developed Stellar OST to PST Converter Software, a Windows utility package that has won multiple awards and is used by customers worldwide. In addition to restoring the HTML and RTF formatting that came with the OST file, it also supports files made with older versions of Microsoft Office. If your Microsoft Exchange Server is down or you want to move some data around, you can use the converter tool. As a result, you can easily transform your encrypted OST files into PST or another Outlook-friendly format. Emails, calendars, contacts, journals, and notes may all be converted from OST to PST with zero chance of losing any information when using Stellar OST to PST Converter.


It also comes in 3 licensing options; however, to get all the features, you’ve to purchase its Technical license, which will cost you $288 for a lifetime. You can buy its corporate license for $85, but that only allows the conversion of five mailboxes and will only be valid for 1year. Also, the corporate license doesn’t allow batch OST to PST conversion.

3. Kernel for OST to PST converter

Lepide Software, makers of over a hundred different Kernel products for use by IT specialists, system administrators, and other computer professionals, includes Kernel for OST to PST Converter among its offerings. For example, the OST to PST Converter kernel is one of the company’s half-dozen email migration products; it’s designed specifically for moving OST emails to other formats like PST, MSG, EML, Office 365, and Exchange Server. In addition to cloud migration and Outlook tools, the company provides software monitoring, backup, and data protection solutions.

No matter what version of Outlook you’re using, the software can recover user mailboxes from corrupted or orphaned OST files and save them as PST files. You’ll also be able to transfer OST mailboxes and data to PST files to any current or past versions of MS Outlook and enable the entire recovery of inaccessible or corrupted OST files and convert them to PST.


The tool is available with four licensing variants

  • Personal License: Costs $49 and can install in 2 systems for 1 year.
  • Home License: Costs $99 for a lifetime and is accessible and can activate in 20 systems.
  • Corporate License: Costs $199 for a lifetime and can activate in an unlimited system.
  • Technician License: Costs $299 for a lifetime and can activate in unlimited systems.

(Note: Only technician license allows the batch OST to PST conversion)

4. Zook OST to PST converter

If you need to quickly convert a huge OST file to PST format, ZOOK OST to PST Converter is the finest tool for the job. This utility allows users to easily import OST files into Outlook. With this reliable solution, customers can easily convert their OST files into PST files and import them into Microsoft Outlook without losing any of their data or formatting.

  • It’s a powerful program with many options for its users.
  • Total OST to PST file conversion
  • Messages in email can be previewed before being converted.
  • There is also the ability to rename files.
  • Compatible with any release of Microsoft Outlook and Windows.


The software is available with two licensing options, Home user costs $49 and can be activated on 2 machines. Another one is a Corporate license that costs $199 for unlimited machines.

5. Aryson OST to PST Converter

If you’re looking for a reliable tool to convert your OST files to PST files, look no further than Aryson OST to PST Converter by Aryson Technologies, Inc. This program is designed to help you access your offline Exchange OST mailbox in Outlook by converting it to a PST file. All mailbox items, including attachments, can be exported to MS Outlook PST, EML, MSG, or MBOX, and it can also repair offline OST files. With the intelligent preview function, you may examine the contents of your inbox in great detail before committing them to a PST file. The software can keep the original OST data unaltered during the conversion process.


Aryson OST to PST converter comes with 4 licensing options. One Administrator license is recommended, which will cost you $199 for 3 years of validity and up to 10 system activation. Its other licensing options are as follows:

  • Single User: This license costs $49 for one year, and you can convert 10 mailboxes. 
  • Technician: It costs $299 for 5 years, and you can use the license in up to 20 systems and convert unlimited mailboxes. 
  • Administrators: It costs $399, is valid for a lifetime, and is used in up to 35 systems to convert unlimited mailboxes. 

So here, the comparison of OST to PST converters gets over. Now it is up to you which software you choose. My personal favorite and recommendation is Regain OST to PST converter; I mean, there is nothing to exclude the software from top. You need to spend $39 and get what you want.


Author: Henry Bray

Henry Bray is a young technologist and content a Content Writer at Regain Software, loves to write about MS Outlook, MS Exchange Server, Office 365, Mozilla Thunderbird and many more email applications.

Leave a Reply

Your email address will not be published. Required fields are marked *