Stellar Knowledge Base

How to Convert OST file in to Outlook PST file?

 Modified on: April 14, 2023 |    38568 views

You need to perform the steps given below to convert your OST file to importable PST file.


  • The homepage of the software provides two options to perform OST file conversion. Click ‘Browse’ button if you know the exact location of OST file or click ‘Find’ button to locate the OST file in your system.

  • Now OST file has been selected. Click ‘Convert’ Button to initiate the conversion process.

  • Once the conversion completes,

  • All the mailbox objects will appear in the left pane of the software window in a tree view format. A 'Scanning of Selected OST file completed' dialog appears to notify you about the completion of conversion.

  • Now you can select all or specific folders which you want to save and click ‘Save Converted File’ button from the file menu.

  • Now you will see a dialog box containing multiple saving options. Select 'PST' to convert data in PST format.

  • Now, specify the destination path where you want to save the converted PST file.


Note: Auto split PST file option allows users to auto split new PST file at approx 45 GB in size.The check box is selected by default if you do not want to split converted OST file then simply uncheck it.


2 User Comments

This process is incomplete (i.e. There are further dialogue boxes after the last one, above) and the images appear to also be out of date with your current UI.




Kheshwar Sharma

Hi David,

Thank you for writing to Stellar.

We would like to inform that your case is already escalated and is checked by the concern team. We will soon update you on the ongoing Ticket.


Team Stellar


User Comments




Stellar Converter for OST Stellar Converter for OST Software converts inaccessible OST into Outlook-importable PST file. All OST components including emails attachments, contacts, calendars etc. are converted into equivalent PST.

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