How to Convert OST to PST Without Outlook? Top Ways

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  • Updated on April 24th, 2025

Summary: Both OST (Offline Storage Table) and PST (Personal Storage Table) are Microsoft Outlook file formats used to keep Outlook data. However, accessing orphaned OST files—those disconnected from their original Outlook profile or Exchange account—can be challenging. Additionally, many users choose to convert OST to PST to make the data more portable and easily accessible in both Windows and Mac Outlook. 

If you want to perform this process with Outlook installed, it will be simpler in comparison to without Outlook. Therefore, we will offer a manual technique using Outlook and the professional OST Converter Tool for conversion without MS Outlook. 

Why Convert OST File to PST?

There are various reasons that make users want to save OST files as PST. Out of all, the common reasons are discussed below: 

  • Through this process, users can recover inaccessible or orphaned OST files easily. 
  • As PST files are portable and can be accessed on both Mac and Windows Outlook. 
  • An OST file is more at risk of data loss than a PST file, as it allows offline access even when the server is unavailable. 
  • If you want to switch accounts or move towards a new Outlook version, export the OST file to PST for easy retrieval. 

Simple Methods to Convert OST to PST

You will get different techniques to complete this task easily and smoothly, including conversion with or without the Outlook application. Now, let’s discuss all the methods. 

#1. Convert OST into PST With Microsoft Outlook

  1. To do this, install and launch Outlook on your system. 
  2. Then, visit the File section and choose Open and Export
  3. Now, look for Import/Export and tap on it. 
  4. In Import/Export, search and select Export to a File -> Outlook Data File (.pst)
  5. After that, choose the folder for saving the OST to PST. 
  6. Later, create a path for the resultant PST file. Click Finish

Thus, you can use the above steps to convert the OST to PST files by using the Outlook apps. If you don’t want to install Outlook for conversion, try another technique. 

#2 Professional Ways to Export OST to PST

CloudXena OST to PST Converter Tool is equipped with numerous advanced features for an effective and smooth outcome. Unlike the above technique, you don’t need to install Microsoft Outlook for conversion. If you want to convert OST to PST in bulk, this is the perfect approach, as it keeps the data secure throughout the process. Furthermore, it gives excellent features such as conversion of emails without attachments, saving selective emails, and more. Other than this, you can view the OST file content before initiating the OST to PST conversion. 

Stepwise Process to Convert OST File to PST

Here, these steps will help you end the process in no time without error. 

  1. To start, download and launch the OST to PST Converter Software. 
  2. Next, tap the Select Files option to add OST files to the system. Click Open.
  3. Thereafter, preview the OST files and tick for next step in the conversion. Hit Next
  4. Later, expand and choose PST from the drop-down menu. 
  5. Further, assign a name and location for output PST files. 
  6. In the end, hit Convert and then the process will automatically start. 

Conclusion 

Here, this blog is helpful for users with or without technical expertise to easily finish the task. As both manual and professional ways are available, you can use any of them. However, many users prefer an automated solution to convert OST to PST within a few simple steps. Apart from this, this process is reliable and efficient in comparison to the manual approach. Moreover, it keeps the data intact throughout the process regardless of file size or number of files. 

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