Free Methods to Convert OST To PST Without Outlook

ost to pst files


In MS Outlook, both OST and PST files are data files. These files contain information such as contacts, calendars, diaries, emails, and so on. There is a requirement to Convert OST to PST without Outlook due to unexceptional server issues, spamming files, synchronization, and power loss. In this article, we will explore techniques for exporting OST files to PST.  You can switch OST files to PST files yourself or using online Expert solutions.

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What are the Functions of OST and PST in MS Outlook?

If we are going to talk about converting OST to PST, we need to first comprehend the significance of OST and PST in MS Outlook since both files perform a significant part in MS Outlook. This is as follows:

OST: In Outlook by Microsoft, OST means Offline Storage Table. This is utilized in MS Outlook as an offline folder for possible offline work. You may browse emails, exchange emails, and use the internet. Internet message Protocol (IMAP) with OST files. You may also save data, calendars, contacts, emails, messages, and so on.

PST: PST stands for Personal Storage Table, and it is also a component of Microsoft Outlook. PST files can be utilized for saving information like calendars, events, contacts, email messages, and so on. PST files also hold backup information for your machine.

What are the Benefits of Converting an OST File to a PST File?

  • OST to PST Conversion has recently been a popular topic on the internet. There are several reasons to transfer OST to PST, including the need to export OST to PST. Let us examine the causes;
  • The link becomes unavailable if the exchange server fails. It may take some time to fix the exchange server if you are unable to connect to it. You can export OST data to PST to use the OST file’s mailbox data in online mode.
  • When a Microsoft Exchange server is down for repair, the OST file includes mailbox data that is only accessible when the exchange server is synchronized. You can migrate if you’re unable to access the mailbox.
  • If you moved to a new company and lost your OST file. In the case of OST data, you can export OST to PST files online.
  • If you are transferring data from one location to another, you will be required to move the data from OST to PST.
  • If you have erased data from OST, you can quickly recover it by switching the file from OST to PST.
  • When your OST file gets damaged due to a virus, a faulty system, or other factors, you can Transfer the OST File to PST using the software.

How Do I Transfer an OST File to PST File?

If you’ve made it this far in the post, I assume you’re curious in how to convert an OST file to a PST file. If you want to learn more about the process of converting an OST file to a PST, keep reading this page. 

If you want to learn about manual procedures and how to export OST to PST Outlook, you should use the following methods:

Method 1: Auto Archive Setting for OST to PST File Conversion

If you use Outlook, you should be aware that email clients have an archiving option that is useful for exporting OST Mailbox to PST. This approach does not enable you to convert contacts; instead, it simply allows you to transfer the mailbox.

  • To finish this approach, you must take the following steps:
  • Launch MS Outlook and select the File menu.
  • Go to the advanced portion of the Outlook option wizard after selecting Option.
  • Then you must select an auto-achievement setting.
  • Then a Pop-up window will appear on your screen; click to activate it.
  • After selecting the appropriate option, click the tab.
  • Finally, your OST file will be converted to PST format.

Method: 2 Import/Export function

  • To convert an OST file to a PST file, you must utilize credentials.
  • Then open the file in Outlook. 
  • Select the import/export option and then click it.
  • Choose export to file, then select the tab option.
  • Select PST file and press the Next button.
  • Now, choose the location where you wish to export.
  • Select the browser option to handle duplicate files.
  • After you’ve entered the password for the OST file, click Finish.

These manual procedures will assist you in converting an OST file to a PST format. However, these approaches require time and have temporal constraints.


  • Manual techniques need time to develop. These approaches appear to be difficult.
  • If you ever lose your data, you should seek expert assistance.
  • Your process can get stalled as a result of an incorrect method.
  • There is no assurance of backup due to the incorrect function.
  • If your file is too huge, your procedure may be halted.

Method: 3 Professional Solution OST To PST Converter

Now we shall comprehend what is meant by Professional Solution.

If you have a large file data set and don’t want to waste time, just install the GainTools OST to PST Converter program.  You can use this program to convert Outlook OST files to PST straightforwardly and accurately.

Let’s look at how to use this program to Convert OST to PST without Outlook                   

  • Run this program and browse an OST file.
  • Then, for scanning, press the OK button.
  • You can select PST file from export option.
  • Then select the location to save the output PST.
  • Then, click to convert now tab to start the OST file to PST conversion.

Your file has now been properly converted to PST.


As we have shown throughout this essay, if you use MS Outlook, you can convert an OST file to a PST file.  You now have two options for converting OST files to PST. The first is to manually convert OST to PST, and the second is to move the OST to PST using an automated method. We can use either strategy, but I recommend choosing the automated option to save time.