How to Convert OST Files to PST in Easy Steps

Written by scott styris  »  Updated on: June 17th, 2025

How to Convert OST Files to PST in Easy Steps

In this blog post, we will be discussing a few ways of OST to PST conversion. We will discuss manual methods such as archiving, import-export, and drag-and-drop methods and also a professional method by using an OST to PST converter. Let's begin the journey of exploring the blog by learning about the OST and PST files.

Microsoft Outlook uses both OST and PST file formats to store emails, contacts, calendars, and much more. While OST files help in accessing mailbox data in an offline state, PST files are used for the storage and archiving of mailbox data.

3 Free Methods for Converting OST to PST

There are three free techniques of converting Outlook OST files to PST format. Let us discuss each one step by step. Now, let's first observe the very first solution.

Method 1: Convert the OST Files to PST Using Archival Method

The archiving feature is free and comes with MS Outlook.

In Microsoft Outlook, go to the File menu.

Select Archive

Save the archived PST file and select the folder to archive the OST file

Click OK to initiate the archiving procedure

After archiving, OST turns out to be a PST file.

Step 2: Convert OST to PST. Using Import/Export Method

We will now export OST data into a PST format by using Outlook's capacity to import and export. Proceed as follows:

Click on the File Menu in Microsoft Outlook.

Open & Export from the menu and click Import/Export.

Export to a file and then click Next.

Export: Outlook Data File (.pst)

Export OST file folders to PST file and save the PST at a location

Finish to export OST to PST.

OST will be exported in PST format once export is completed.

Method 3: OST to PST by Using Drag and Drop Functionality

Drag and drop the OST files into PST format by following these instructions.

Open Microsoft Outlook and click File > New > Outlook Data File to create a new PST file.

Open the newly created PST file. Move selected folders from OST to PST file.

Drag & drop selected folders of the OST file to a newly created PST file.

Disadvantages of manual techniques for OST to PST conversion.

Although the manual techniques are free of charge, some demerits are also involved. Some common demerits in converting OST to PST manually are as follows:

Manual procedures are time-consuming, especially for larger OST files

Manual techniques can lead to data loss or corruption if not followed in the correct manner. • Manual methods are not suitable for people who have low technical knowledge.

There is no mass conversion capability for OST files.

 In case you do not like such a limitation, then there will surely be the third variant an expert supplies. Further, let's step on the best technique for OST export to PST. Expert Conversion of OST to PST

The ToolsGround OST to PST Converter is the best tool that can easily convert OST files into PST format. It is capable of converting OST file contents to PST files in a very simple and safe way without damaging or losing any data. This software supports complex features such as selective file conversion and management of folder hierarchy. This utility lets you import OST to PST, EMLX, MBOX, and many more formats.

Conclusion

While there is such a thing as the OST to PST conversion methods, which deal with the manual procedures, they are very time-consuming and require technical knowledge, besides risking data loss. A professional converter might thus be efficient and safe as it will ensure correct and safe transport of all the data. The approach is thus either manual or professional; weigh the pros against the cons depending on individual needs and requirements.


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