How to Create PST from OST file? – 3 Simple Methods

Max Wright | July 12th, 2025 | Data Conversion, Outlook

Learn how to create PST file from OST file. In this blog, we will discuss the top 3 methods that will be helpful for creating PST file from Offline Outlook .ost files.

Before we proceed with the process, let’s take a look at the overview of OST  File Format and PST File Type.

Well, OST and PST are both used in the Outlook application. Outlook uses a PST file to export or import data. On the other hand, OST is an offline data file that users can work on offline. Both files are saved emails, contacts, calendars, and many other items.

Many users want to create PST from OST file for various reasons such as backing up emails, migrating to a new account, or recovering data from an inaccessible mailbox. If you are also one of them, then read this article. Here you will get to know why and how important it is to make PST from Outlook OST file. Also, you will know how to do this task without software and which tool is the best for you. In the end, you can go with any of methods that meet your needs.

Need to Make PST File from OST (Outlook Offline File)

The OST file is created when the user configures the account with IMAP to store data. Almost all Outlook users know that the chance of OST file corruption is always high. It is therefore a good idea to create a single PST from an offline Outlook file as a backup and access it at any time in the future. When users move their job or their email application to another application, they must migrate all of the data from the OST file. The PST file is the main Outlook data file that can be easily accessed in many applications.

How to Create PST from OST File?

There are two manual methods are available that help you to make PST from Outlook OST file. Both methods are mentioned below:

Method 1: Export Mailbox to a PST File

  • Login to Outlook with the Exchange account that was used to create the OST files.
  • Now, go to the File menu.
  • Select Open & Export >> Import/Export option.
  • Choose Export to a file and click Next.
  • Choose Outlook Data File as a file type to create and click Next.
  • Select folder that you want to export and again hit the Next button.
  • Click Browse and select the location where you want to save the new PST file.
  • Under Options, choose the required one and click on the Finish button.

Method 2: Use Archive to Create PST from OST File

  • Open Outlook application on your system.
  • Click on the File menu and select Options.
  • In Outlook Options, choose Advanced and click on AutoArchive Settings.
  • Now, select the number of days in which you want to run auto-archiving.
  • Choose the location/folder to save the archived file and click OK.

This will save mailbox items from the offline Outlook data file to the PST according to your archiving settings.

Even so, most of the users are scared of using the above-mentioned methods and want a quick fix to create PST from Outlook OST file. Since the chance of data loss is high, it takes a long time and is difficult for beginners to complete. In order to get rid of all of these problems, most of users are searching for the best software for creating PST file from OST. In the next section, we have explained which tool does this job best. Let’s look at that.

How to Make PST from OST File Automatically?

Try Advik OST to PST Converter tool to create PST from OST file in just a few simple clicks. With this tool, you will get quick, reliable, and 100% accurate results. It allows you to make a PST from Offline Outlook .ost file without Exchange server connectivity.

This software enables you to create a single PST file from multiple OST files. It is very easy to use and any novice can easily use it without taking help of any technical expert. It supports saving all data items in PST associated in the Outlook Offline file. The best thing about this tool is that it does not have file size limitations.

Download the free demo version of this utility to check its working procedure.

   

Steps to Create PST from OST File

Step 1. Download and install Advik OST Converter.

run the tool

Step 2. Click on Select Files and Add OST files.

create pst from ost

Step 3. Select mailbox folders as needed and click Next.

create pst from ost

Step 4. Select PST from the file saving option.

create pst from ost

Step 5. Click on the Convert button and analyze the live process.

make pst from ost

Done! This is best way to create PST from OST file without Outlook, exchange profile and exchange connectivity.

Now, let’s have a look at some highlighted feature of this tool that helps users to easily and quickly accomplish this task.

Features of Advik OST Converter Tool

  • A simplified user interface that even a beginner can access
  • Capable to recover damaged or corrupted Offline Outlook file
  • Supports creating a single PST file from multiple OST files
  • Compatible with all versions of Windows & MS Outlook
  • No file size restrictions for making a PST file from OST
  • No external application or utility required
  • Free from viruses, malware, and advertisements

Closing Words

We know the importance of your data, which is stored in the Outlook offline data file. When it comes to creating PST from Outlook OST file, users are always confused about which method will give them 100% safe and fast results. In order to provide an answer for all users, here we have explained the three best tested and tried methods.

You can only create PST from OST file using either manual methods if you are using Outlook with the original Exchange account. Also, the manual approaches are very difficult to perform and can damage your data. Hence, we also mentioned the best tool that can help you make PST from Outlook OST file without Exchange Server connectivity, Exchange profile and Outlook installation.