10 Best OST to PST Converter in 2024

If you are looking for the best software to convert OST to PST, we have done a detailed comparison and review of the best OST to PST converter tool, free/paid.
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MS Outlook is probably the basic need of every company. There are many email client servers out there. However, Outlook is much liked among all of them because it allows its users to save their important emails even if they are working offline. Most companies use the MS Exchange Server program that can store your whole data in .OST file when you are offline and synchronize it with the account when you are online.

OST basically represents the Offline Storage Table that works offline in order to store your emails on your hard drive that are synchronized with your online account every time when you log in. The synchronization is done through the MS Outlook PST file in order to keep your mail-box up to date with new emails, delivery requests, delivery reports, etc.

In case, the MS Exchange Server gets corrupted or slows down while moving the information from OST to PST file then you may need an OST to PST Converter Tool.

In this article, we will be discussing some of the best free OST to PST converter as well as Top OST to PST converter software and we will see how they work. Moreover, we will see some best alternatives to those OST to PST converter tools.

What is OST to PST Converter?

An OST to PST converter comes to help when MS Exchange Server is stuck into some kind of unknown error and due to this some files get corrupted. The OST to PST converter tool helps us to recover that corrupted emails, contacts, data, information, etc. So basically OST to PST converter is a very useful software that can help us to retrieve our lost data because of the Server issue within minutes. So, OST to PST converter software allows us to easily convert corrupted OST files to PST in an absolute manner.

Who Should (Or Should Not) Get An OST to PST Converter?

If you are sure that there is some kind of issue in the Exchange server or corruption had occurred while moving the information then you would look for a way to convert your email from OST file to Outlook PST file format.

Well, If you are facing any of the below-mentioned issues then you are the person who should be using OST to PST converter software.

  • A few Exchange emails get removed from the server.
  • Willing to back up a few Exchange emails.
  • Want to rebuild the corrupted OST file or some data remained unsaved during the transfer.
  • Unable to access mailboxes due to Server crash, Exchange corruption, etc and you need those mailboxes urgently.
  • The exchange server suddenly stopped working.
  • want to move data from OST to PST.
  • Exchange Server breakdown due to some kind of Virus attack or Trojan infections.

How we Choose the Best OST to PST Converter?

It is really a hard job to test all the products under the same criteria and declare one product as the best OST to PST converter tool among the hundreds of the other software. Every software comes up with little differences to others and that’s what helps us to select the best product that best suits user’s needs and gives good results in all tests.

Here are the criteria through which have defined the Top three best OST to PST Converter.


Effectiveness is the first priority that we see in any product because the efficiency of any software really matters. The software is passed through different efficiency tests and effectiveness is measured by seeing at results that it represents every time.


The software prices really impact on their chances to be purchased or not. Most of the time, users are looking for something with good results and lower prices. The software we declared as the best software comes up with very affordable prices.

Ease of Use

The reliability of any software should be the first thing on which developers pay attention because it is not necessary that all the users are well aware of technical knowledge and comfortable to understand complex procedures.

The chosen tools are very easy to use and have a friendly nature.


Customer Support might be measured in some cases when you are stuck into some problem or unable to understand the software mechanism. Good customer support is a way to grab more customers. So, the best software should definitely have good support and respond within a short interval of time as well.

We have shortlisted some of the best OST to PST converter software based on the above tests and we hope that you will also find them very helping and problem-solving. So, let’s start and see what are the best OST to PST converter tools that you can trust and use.

Best Choice: SysTools OST to PST Converter(Test-based)

Systools OST to PST Converter is an extremely wonderful and exceptional software that transfers offline OST files to Outlook PST format all at once. Besides this, the software can easily solve all the critical issues. The program works offline so there is no need for Outlook connectivity. Due to its performance and powerful features, the software is very famous among its users. That’s what makes it our first choice.


  • Lessen time by exporting OST files to PST in batches
  • Using SysTools converter, you can convert data from backup file Outlook.bak.
  • The software also shows the deleted emails that can be retrieved.
  • It allows you to preview the contents of the OST file.
  • Filter and Sort Outlook OST files before export.
  • Capable to save Files in EML, HTML and MSG Format.
  • Compatible with all Outlook versions including 2019/ 2016/ 2013/ 2010/ 2007/ 2003/ 2002/ and 2000.
  • Can move exported PST file directly into Office 365.

How it works

Download the Systools OST to PST Converter software from its official website and install it on the windows operating system.

Click on Add File to insert the corrupted file or the file that is being transferred, into the software.

Add file in Systools OST to PST Converter Software

Systools OST to PST Converter’s preview mode allows you to preview restored OST files.

Preview restored OST files in Systools OST to PST Converter Software

On the next screen, you will different options, click on the PST radio button in order to convert the OST file to PST.

Select PST to convert the OST file to PST in Systools

Browse the location where you want to save the PST file and click on Export to start the process. Wait for the process to finish.

Click export to start the process in Systools

Runner-up: Stellar Converter for OST(Test-based)

Stellar Converter for OST makes the conversion of mailbox content very easy and simple. Stellar’s OST converter is far advanced than other software and offers multiple additional features to its users that no one offers. Systools OST to PST Converter is capable to search the OST files individually and store them in one place or in a single file. Moreover, the software work dynamically that makes things easy and understandable.


  • It can easily convert encrypted OST files into Outlook PST files.
  • Support and Transfers IMAP OST files.
  • It allows you to search for files on the basis of different criteria like “Date, Size, and Subject, From, To, etc. Also, capable to save files on the relevant criteria.
  • Regardless of the OST file size, it offers the OST files conversion to PST files.
  • The software allows you to convert 20 emails per folder in its trial version.
  • Supports all Outlook versions 2019, 2016, 2013, 2010, 2007, 2003, 2002, and 2000

How it works:

Download the Stellar’s OST converter software from its official website and install it on the Windows operating system.

Click on the Browse option in order to select the OST file.

Select OST file for conversion in Stellar converter for OST

Now, it’s time to convert the OST file. Click on the Convert option so that Stellar’s OST converter can convert your OST file to PST file.

Convert OST to PST with Stellar’s OST converter

In most cases, users don’t know that where are OST files are saved into the computer memory and that’s what the Find button does here. It helps users to automatically search the OST file and then browse the location in front of you.

Well, if there are multiple OST files to be converted then it will locate all the files and displays in front of you. After that, you can click on the Convert option to proceed with the process.

Find OST file to convert in Stellar’s OST converter

Wait for a while to complete the conversion that depends on the size of the OST file. When the conversion is finished, you can click on “OK” to close the conversion window on the screen.

Conversion of selected OST file completed in Stellar

The last step is to choose the file format in which you want to save the file. Definitely, you will choose the PST radio button to convert those OST files into PST files.

Choose PST to convert OST files into PST files in Stellar

Also Great: Kernel for OST to PST(Test-based)

Kernel for OST to PST is another efficient software which is capable to repair, recover, and convert inaccessible OST files to PST files. It can recover complete mailbox including emails, contacts, and calendars. Also, Kernel for OST to PST software is considered as an exceptional tool to retrieve emails because it thoroughly searches the all possible OST files.

The Kernel for OST to PST converter software displays the recovered data in tree format that is much better to understand and allows users to save the recovered data at their desired locations.


  • Convert OST to PST
  • Export OST to Office 365 Mailbox
  • Save OST Emails to Multiple Formats
  • Create Graphical Report
  • Split PST by File Size
  • Runs on all Windows Versions
  • Corrupt OST Recovery
  • Restore OST to Exchange Server
  • Migrate OST Items to Gmail Account
  • The OST to MBOX Conversion
  • Preview OST Mailbox Items
  • Find Messages
  • Selected Email Migration

How it works:

Download the Kernel for OST to PST converter software from its official website and install it on the windows operating system.

From the Select File option, choose the target OST file and proceed.

Select target OST file in Kernel for OST to PST

As mentioned before, the software allows you to export individual as well as multiple OST files. Browse the OST file or you can search the OST file.

Convert single file or multiple OST files in Kernel

On the left side, you can see the hierarchy of the chosen files. You can randomly select the files of your interest and then you can save them.

Select the OST files and save them in Kernel

Kernel for OST to PST offers multiple file formats that you can use to convert the data from the OST file. Choose the PST file format to convert the OST files to the PST files.

Choose the PST file format to convert the OST to the PST in Kernel

Kernel for OST to PST allows you to save and search the data in multiple formats. Choose the filters if they can make your work easier.

Select the desired filters to save specific data in Kernel

Well, all thanks to the Kernel for OST to PST which allowed you to divide the PST files into different sizes. Choose the max file that you wish to see.

Manage recovered PST data using Split option in Kernel

Choose a location where the file will be stored and click on the Finish button.

Select destination path to save PST file and finish

As soon as it finishes, you will get a prompt on the screen like this which indicates that files have been successfully stored at the desired location.

New PST file saved successfully in Kernel

The Competition

Besides the Top OST to PST converter Software, we have compiled a list of other emerging and famous tools that can efficiently perform the same.

eSoftTools OST to PST Converter

eSoftTools OST to PST converter is one of the quickest conversion tools that can convert inaccessible OST files to PST files within minutes. Besides conversion, it can also perform recovery and export removed OST files. The most effective part of this tool is, you don’t have to download and install MS Outlook application on your computer or Windows.


  • Fast Conversion
  • Recover/Export Deleted Folder Emails
  • Several Formats to Export OST File
  • No Outlook Required
  • Export Selected OST Folders
  • OST File Viewer
  • The OST to PST Export Tool
  • Preserve Folders Structure
  • Create Unicode PST File
eSoftTools OST to PST converter

Shoviv OST to PST Converter

Shoviv OST to PST Converter is also a great converter software to convert OST to PST, transfer OST files to Exchange Servers and Office 365. T fully helps to recover lost mailbox like emails, contact, calendars, etc. The software is not restricted up to a specific size. The software preserves the whole information of the OST files when the conversion is performed.


  • The Software provides a fast and ultimate conversion from OST to PST.
  • The Software is not restricted to the OST file size limit.
  • It offers the preview option to see the items just before starting the conversion.
  • The Software properly maintains the hierarchy of the data
  • It supports all the versions of the MS Outlook and Windows O.S.
  • It allows to search OST items by certain field name.
Shoviv OST to PST Converter

SysInfoTools OST to PST Converter

SysInfoTools OST to PST Converter is an amazing converter that converts damaged or repaired OST files as well as exports password-protected data. The software works even if you are Offline and convert multiple files at the same time.


  • No file size limitation for the conversion of OST to PST.
  • Has an option to eliminate email with the use of a date filter.
  • This software can manage Bulk files and conversions.
  • Support Password encrypted OST files.
  • Capable to do ultra-fast scanning and conversion.
SysInfoTools OST to PST Converter

Aryson OST to PST Converter

Aryson OST to PST Converter software is known as a quick as well as safest conversion tool that performs OST to PST file transfer within minutes. No matter how many files are corrupted, it can easily perform the conversion. During the conversion from OST to PST, it keeps the original data safe.


  • Users can preview transferred OST files before the complete conversion process starts.
  • This converter tool can easily convert OST file into PST file format.
  • It allows the users to find and locates Offline OST files in your system.
  • Developed with attractive and user-friendly GUI.
  • Compatible with all MS Outlook versions.
Aryson OST to PST Converter

OST2 Converter

OST2 Converter is a Microsoft provided converter software and also a great choice to convert OST files to PST. OST2 Converter comes up with very attractive GUI and that is the reason people sometimes prefer it over other converter software.


  • Understandable GUI makes OST to PST file conversion a convenient.
  • From OST file to PST file format, converts the emails, calendar, contacts, and other mailbox contents.
  • The free trial version of the application enables the conversion of up to 5 items from each OST folder.
  • Supports the transfer of OST file data to Office 365.
OST2 Converter

ATS OST to PST Converter

ATS OST to PST Converter uses advanced technology to convert, recover and repair any type and level of fire damage to OST files. The software particularly keeps a copy of the original data and then start the conversion process. ATS OST to PST Converter is supported by all the latest Windows versions.


  • Support cloud-based programs like Live Exchange Server and Office365.
  • Full data coherence after conversion.
  • Convert single or multiple emails at once
  • It can recover the contents from the deleted or corrupted OST files.
  • immediately restore OST file contents to the original Exchange Server location.
  • Crack large OST files to multiple small PST files.
  • Offers deep scanning feature of all OST file issues.
ATS OST to PST Converter

KDETools OST to PST Converter

The KDETools OST to PST Converter probably one of the top OST file convert, repair, and data recovery software. Besides OST to PST, it can convert the OST file into different formats. It has also very strong features regarding mailbox recovery. It can recover the whole mailbox within minutes.


  • Retrieve & convert inaccessible OST files to PST files
  • Convert whole OST files with their properties & attachments.
  • Maintain a tree structure for files & folders during conversion.
  • Display preview contents with OST mailboxes.
  • It allows you to save converted OST files in multiple file formats.
  • The trial mode allows free preview of all restored OST email items before starting the conversion.
  • Compatible with all new & old versions of MS Outlook, Exchange Server & Windows Operating Systems.
KDETools OST to PST Converter


In this post, we have discussed the best OST to PST converter tools of 2024 that can help you to convert your OST files to the PST in case, the OST files are damaged.