OST to PST Converter/Repair

All-in-one solution for OST file related issues.

  • Recover precise email data from corrupted and inaccessible OST files with original outlook profile.
  • Convert OST to PST either you want to move Microsoft Exchange Server data or Exchange Server goes in non-function or dismounting stage.
  • Installation of MS Outlook is not required
  • Preserves Meta-Properties & RTF of all emails

Efficient OST to PST File Conversion

migrate OST to PST file

Complete OST Items Conversion

OST PST Converter ensures all Exchange mailbox objects like emails, contacts, attachments, notes, calendar entries, etc. stored in the Offline OST file and converts them to PST files easily.

complete OST item conversion

Export Outlook OST Items

The OST to PST Converter can swiftly extract all data within OST files and saves them securely into a newly created PST file. The new PST file can thereafter be imported into MS Outlook to access all data.

keep meta data and RTF

Keep Meta Properties & RTF

The tool ensures that all the meta-properties of the emails like subject, sender, receiver, size, etc. are kept intact after conversion. It also maintains the Rich Text Formatting of every mail.

Convert OST to PST Outlook 2016/2013/1010

Microsoft Outlook is widely used in officers for internal and external communications. Most Outlook users have an MS-Exchange Server account which works in synchronization with an offline storage table file (OST). The OST file conserve emails and other Outlook activities on Exchange Server in offline mode. MS Outlook updates these files so long the internet connection is established. In conclusion, these OST files work in synchronization with the MS Outlook PST file. It helps in keeping the mailbox up-to-data with new mails, meeting request, delivery reports, etc.

Problems & Solutions

Mail items become inaccessible due to serveral Exchange Server or MS Outlook corruption issues. In such situation, you need to convert mails in the OST files which contain crucial business information into a different Outlook compatible file format like PST.

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Hardware Failure

If there is a data storage failure like the drive got bad sector, then your OSF files become inaccessible. And network failure happened while synchronization process leads to OST corruption.

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Synchronization Error

OST file located at user systems need to synchronize with Exchange Server, sometimes synchronization errors further not allow opening particular Outlook item leaving the OST in orphaned stage.

virus infected

Virus or Malicious Software

The viruses and malicious software could damage Outlook and Exchange Files then our OST is becoming inaccessible. The OST to PST Converter could restore the damage OST files in PST formats.

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Abnormal Outlook Termination

The OSF file is prone to be corrupted or damaged in case your Outlook is shut down abnormally when you are opening, accessing or synchronizing the OST file. So you need to convert OST file into PST.

3-Step to Convert OST to PST File

select OST file

Select OST File

Launch and select your OST file from ‘Select Outlook File’ option.

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Scan for OST File

It’s free for you to scan for recoverable OST files and preview.

scan now

Convert OST to PST

Choose the destination path and convert OST to PST file format.

Easy OST to PST Conversion

OST to PST Converter provides the complete and efficient solution for converting Exchange OST to Outlook PST files, no matter you want to recover corrupted/inaccessible OST data or you just want to move Microsoft Exchange Server data or Exchange Server. OST to PST Converter performs speedy OST to PST conversion without making any data loss.

Supported OST Files

Supported all kinds of OST files even if they are damaged or currup, along with encrypted OST file.

Outlook Compatible Formats

convert OST to PST file PST File

convert OST to MSG file MSG File

convert OST to EML file EML File

convert OST to RTF file RTF File

convert OST to PDF PDF File

convert OST to HTML file HTML File

Migrates OST to PST files

OST to PST Converter enables you to convert OST to PST files with all the data items. The new PST file can thereafter be imported into MS Outlook to access all data.

  • Convert all Excahge objects including emails, contacts, attachements, notes, journals, calendar entires, and more to PST format.
  • Not only convert Exchange OST to PST, but also save the converted emails in MSG, EML, RTF, HTML, or PDF formats as well.
  • In case you have lost access to your encrypted OST file, this OST PST Converter could help you to fix encrypted OST file and safely convert it to PST file.
migrate OST to PST file
restore lost data from OST file

Restore Lost Data from OST

Stellar OST to PST Converter is designed to support both of the healthy and corruption OST files. You’re empowered to recover all your important emails from your corrupt OST but also restore deleted emails as well.

  • In case Exchange Server crashes, you could recover Exchange mailbox folders by opening the converted PST file in Outlook, keeping your precious data accessible.
  • Convert OST file and open Exchange mailbox emails, contacts, calendars, tasks and other folders in Outlook easily.

Split and Compact Large-size PST Files

To avoide the possibilities of large size PST file corruption, you can split the large PST file into smaller parts and save in to desired location. What’s more, you can also select to compact the PST file to decrease the size acquired by PST file in the disk.

split PST file
convert OST to Office 365

One-stop Solution for OST Outlook

  • Save the converted email data in PST, MSG, EML, PDF, RTF or HTML formats.
  • Export OST file to MS Office 2016, 2013 (32 bit/64 bit), MS Office 2010 (32 bit/64 bit)/2007/2003/2002 (XP)/2000.
  • Export OST files to Office 365 format (This feature is available in Tech Version).

Software Specifications

System Requirements

Operating System

Windows 10, 8.1, 8, 7, Vista, XP


Pentium Class

Hard Disk

50 MB of free space


512 MB Minimum

License Type

Single User License

Can use only on a single system

Technician License

Can use the software on multiple systems at single location

Why you need to convert Exchange OST to PST file?

You may require migrating from OST file to PST in any of the following cases:

  • In case of your Exchange Server downtime, the server crashes and your data is not accessible, you may want to convert OST to PST file format.
  • Your mailbox on the Exchange Server is deleted accidentally and you need to access your emails.
  • You are facing issues while synchronizing MS Outlook with Exchange Server.
  • Exchange OST file could become in accessible due to the problem caused by the viruses and mailicious software damaging your Outlook and Exchange files.
  • You need to restore your inaccessible OST files in PST format while your Outlook and Exchange files are damaged by viruses and mailcious software.
  • You need to back up data as a .PST file whenever you need to carry your business emails to a different workplace or organization, or just avoid something happens to Exchange Server.
exchange server

Select the OST file you want to convert and choose a location where you want the convert PST file to be stored. The conversion can be done in a couple of clicks. What’s more, some convenient alternatives make OST to PST Converter one of the best tools in OST recovery and converter.

Easy-to-use OST file Conversion

preview available

Objects Preview


Selection Formats

destination folder

Save to Desired Location

easy convert OST file

Helpful instructions