How to Convert OST to PST Manually? Learn About Most Used Methods

Are you hunting for some easy or free way to convert Outlook Offline OST files to PST?  If yes, then be happy. Here you will get the best solution to import offline OST to PST files. In this article, we will talk about the two methods to export OST files to PST. The first one is the procedure to convert OST to PST manually and the second one is third party OST to PST ConverterIf you are the Outlook users you might have encountered the situation when you need to migrate Outlook OST files to PST.

With the existence of the Digital Era, e-mail has become the most vital mode of communication from the beginning itself. Over the past 42 years, email has evolved into one of the most cost-effective and comprehensive modes of communication. Increasing business and entrepreneurship required better and full-featured professional email clients. In order to fulfill the different requirements of different customers, various email clients became available within a short period of time.
Any messaging client-server system with excellent and powerful functions of storing personal information is preferred by organizations. Likewise, MS Outlook is one of the popular email clients frequently used in companies and organizations. So need for OST to PST conversion tool is very obvious.

Brief About MS Outlook

Microsoft Outlook is part of the Microsoft Office suite mainly used to access Microsoft Exchange Server email. It allows you to send, receive and store emails, Not only does Microsoft Outlook provide access to Exchange Server email, but it also includes contact, calendar, journal, task manager and web browsing. Through Microsoft Outlook you can integrate Outlook with Microsoft’s SharePoint platform to share project notes, documents, send reminders, collaborate with colleagues and much more.
Microsoft Outlook can be used on a single system, or it can be used on an exchange server so that several users can access all of its features at once. The outlook is known for having a user-friendly interface that makes it easy to learn and work on it.

Data files of MS Outlook such as email messages, notes, tasks, calendar, journals, and other items are saved on the mail server and in your system both. All the Outlook items that are stored in the System is kept in Outlook Data File.

There are two ways to work on MS Outlook as per the user’s needs and
Microsoft Outlook as a Standalone application
• Microsoft Outlook with Exchange Server environment

Stand Alone Application: An e-mail account is required to set-up MS Outlook, as it acts as the provider for webmail. Thus, the account configured with MS Outlook becomes the default account. More than one account can be configured as a primary account and other secondary.
MS Outlook with Exchange Server: Connecting your Outlook to an Exchange Server allow you to continue your work even when you are not connected to any server. Thus, you are able to access your messages, contacts, calendars, etc., and make changes to it, which will be updated automatically once you regain your connection with the server.

OST ( Offline Storage tables)

OST File is an offline folder build by Microsoft Outlook and Microsoft Exchange to hold your offline copies of whatever file exists in the exchange server. This allows you to work offline or use the Cached Exchange Mode when there is no connection to the Exchange computer. OST files make it possible to extract the desired folder from a server location and allow you to work with that file contents even when you are not connected to the network (offline). When you get connected, then all the folders get synchronize with the exchange server. This process is known as synchronizing folders.

 PST ( Personal storage tables)

It is also known as folders or personal files. It is neither created by Outlook nor the Exchange server. Instead, you can create it to save all your emails, journals, tasks, contacts, calendar entries, etc. These PST files can be saved anywhere in your system. It can also be used for archiving file items from any email client.
POP3, IMAP, and HTTP accounts use the PST file format.
Sometimes there is a need to migrate your OST file into PST file format. There can be many reasons for converting your OST file to PST format. In the case of your Exchange Server downtime, there is an accidental user account deletion, the server crashes and all your data gets corrupted and inaccessible, So converting OST file to PST format performs recovery of email messages, notes, journals, contacts and tasks which are saved in highly corrupted OST file.

Free Methods To Convert OST File To PST File

You can use the Archive feature to move or copy data to a PST file – this method works well when you have to move almost everything in your mailbox.


If you want to convert OST to PST format, you can use this feature to have all the mailbox data of an OST file into a PST file. This feature helps you move or copy almost each and every mailbox Note – you cannot archive Contacts. To convert contacts from OST files To PST Converter, follow the steps given below:

Step 1: Open Microsoft Outlook.

Archiving files manually for ost file conversion

Now open your exchange OST file which you want to move to new PST file.

Step 2: Click File tab > Info.

Select the Option Cleanup Tools

Step 3: Now Click Archive

Step 4: The Archive dialog box will appear there.

Normally, “Archive this folder and all subfolders” box is checked by default. If it is not, then do check it.

Now select the folder from the list of OST files that you want to move. For example Inbox.

Step 5: Now, you can see an option Archive items older than there.

Then, select a date from the calendar.

Step 6: Now click Browse to define a location to save the new PST file.

Also, give a new name to this new PST file. Click OK.

Step 7: In the edit box, you can see the new PST file along with its location.

Steps to convert ost to pst

Click OK to start the actual process.
It’ll take a couple of minutes to complete the process successfully. As a result, the new PST file contains the mailbox folder archived from the OST file.


“Import and Export” in Outlook’s inbuilt feature used for converting mailbox data from one client to another. With the help of this smart feature, you can swiftly convert Exchange Server’s OST file to PST. Moreover, It also allows the conversion of OST to CSV and Excel format.


Through this method, you can create a new PST file and drag the folders you want to move to the PST.
Dragging default folders such as Inbox, Contacts, and calendar, is not possible. A message will be displayed that you can’t move default folders.


If you don’t have too many files for converting, then you can email them to your personal email address. Just select the items, then right-click and choose Forward. If you have many OST files, you could drag the files to a new folder in My Documents, then just zip the folder and email that zip file.

Though manually converting OST to PST file are easy but not very effective as they sometimes file gets corrupted during the manual conversion of OST file.

You can also try a third-party tool to recover and convert your OST files. The OST to PST Converter software by MailConverterTools is a very high-end tool that flawlessly works on your Exchange OST files and repairs it. By using this utility. You can also easily convert your OST file to many other formats such as PST, MBOX, DBX, MSG, EML, and Archive.

Free Download


The important scenarios during the conversion of OST to PST conversion is taking care of the proper steps to convert OST file to PST. So to cover this topic we here have discussed the process of how to convert OST to PST manually. But its also important to have the backup of OST file content, what if you lose the data during the transfer. To avoid any loss or recover OST data I want to recommend the OST to PST Converter to Recover deleted OST files and convert it into PST format.

1 comment on “How to Convert OST to PST Manually? Learn About Most Used Methods

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