OST to PST Converter

All-in-one solution for OST file related issues

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

For Windows 10, 8.1, 8, 7

convert OST to PST Outlook 2019

Recover files

Convert OST to PST Outlook 2019, 2016, 2013, 2010, & older versions.

Microsoft Outlook is widely used by 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-date with new emails, meeting requests, delivery reports, etc.

migrate mailbox to office 365

Recover files

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 Exchange objects including emails, contacts, attachments, notes, journals, calendar entries, 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 the encrypted OST file and safely convert it to PST.

mailbox items

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 files and open Exchange mailbox emails, contacts, calendars, tasks, and other folders in Outlook easily.
restore mailbox items

Convert & sPLIT

Large-sized PST File

Convert Large-Sized OST File

Effectively convert the large OST file when Microsoft Outlook or Exchange Server is crashed or facing a disaster, or Outlook is facing synchronization issues. It converts the OST file efficiently and extracts the data with 100% precision.

Splits the Large-Sized PST File

To avoid the possibility of large size PST file corruption, you can split the large PST file into smaller parts and save it to the desired location. The tool offers to split the PST file in the size of 1-50 GB while preserving the original of the mailbox data. What’s more, you can also select to compact the PST file to decrease the size acquired by the PST file in the disk.

OST to PST Convertion preview


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).
export OST file to Office 365

Convert OST like a pro

Easy-to-use OST file Conversion

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.

Tech sPECs

Version Support:

MS Outlook: Office 365, 2019, 2016, 2013, 2010, 2007

Hard Disk:

250 MB for installation files


4 GB minimum (8 GB recommended)


Intel-compatible (x86, x64)

Operating Sytem:

Windows 10, 8.1, 8, 7

Languages Supported

English, German, French, Italian, Spanish