OST to PST Converter Software

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SysTools OST to PST Converter
Export Your Offline OST to PST, EML, MSG & Office 365 With 100% Secure Tool

(Average Rating 4.8 Based on 130 Reviews)

  • Convert Data from OST files: Emails, Calendars, Contacts, Task, Journal etc
  • Freely preview items before conversion from OST to Office 365, PST, EML & MSG new feature
  • Recover & extract all data items of Offline OST file
  • Supported deleted data restoration from offline OST mailbox
  • Compatible with Outlook 2016/ 2013/ 2010 / 2007 and all below versions
  • Support Conversion from Office 365 & Hotmail OST File
  • Converts Outlook.bak to PST file of any MS Outlook versions
  • Provides the option to import OST file to Exchange Online (Office 365) .
  • Provides Date Filter to Export OST File by Specific Date

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Free Live Demo - SysTools OST to Outlook PST Converter Fully Secured Download Version

Expert Reviews for OST File to PST File Converter

The overall tool is designed nicely that it help its users in all critical scenario. There can be conditions when Offline OST file needs to be transferred without any specific or valid reason. SysTools OST to PST Converter is the simple utility which easily convert all the mailbox data from Offline OST file to PST. There is no limit on the size of data to export it using this tool.

MVP Logo  MS Exchange Expert

SysTools OST to Outlook PST converter software is the ultimate solution to export Offline OST mailbox data to Outlook PST file format as well as export .bak file (created using scanpst.exe) to pst file. Its 5.0 version has many update and new features which allow user to convert the data into a healthy state.

SysTools Offline OST file to PST Converter got 5 star rating from BrotherSoft for providing best services with complete support.

Soft Pedia give 100% clean award to SysTools Offline OST file to PST Converter for delivering Spyware & virus freely.

Systools OST Data to PST Converter got 4 star rating from CNET for it wonderful performance and simple user interface.

Soft32 rate SysTools Offline OST file to Outlook PST converter with 5 star for its effectiveness in converting OST data file.

Filehippo states SysTools OST Converter software as safe and secure tool in the virus scanning technology provided by Avira.

SysTools OST to PST Converter is the highly suggested software among various other tools for its best performance and 5 star rating by its users.

List of Key Features in SysTools OST to PST Converter Software

export OST files

Convert OST to PST

This utility is designed in such a way that it export OST file to Outlook 2016/13/10/07 format without any hassle. It converts all data items stored in the OST file such as emails, journals, notes, tasks, contacts, etc. Moreover, using this software one can convert offline Outlook file of any size successfully to PST file format.


migrate OST to Office 365

Move OST to Office 365 new feature

This tool provides user with facility to upload ost file to office 365. With this option user can easily migrate all items such as Emails along with attachments, Calendars, Contacts etc. from .ost to O365 using Category Filter in Advanced Settings. It also provides facility to export selective mails to Office 365 environment.


scan OST file

Alternative to Save Scanned OST File

As the user add OST file to the software, it begins the OST file scanning process. After scanning the file, the OST to Outlook PST Converter provides users an option to save the scanned OST file on the local machine. This feature is beneficial when the same OST file needs to be opened in future. A user can directly load the scanned OST file and saves time.


Preview Offline OST Data

Thoroughly Preview OST Data

After successful completion of the scanning process, the OST to PST Converter provides an instant preview Offline OST items. It includes a preview of all components in OST file like emails, contacts, journals, notes, calendars, etc. Moreover, users can view these data in two different views while moving OST to Office 365 i.e. Horizontal and Vertical view based on their choice.


Convert OST file to PST

Export OST With or Without Outlook

The Offline OST to Outlook converter software provides users an option to extract data from Offline OST file. The migration can be performed with or without Outlook installation in the user machine. One can perform complete conversion process independent of Outlook also.


date filter

Organize Date-Based Filtering

To Transfer Offline OST file data to PST format the software provides users an option to convert data from specific dates only. For this, one needs to use the date-based mail filter option and specify the dates in ‘to’ and ‘from’ field. The software will export OST file that falls under the specified date range to PST format.


Export selected files

Selective Export Options new feature

Sometimes users do not want to migrate data from Offline OST file to PST format. Thus, to resolve this option, the OST data file to PST converter provides an option to export files or folders from OST file. To do the same one just need to check the items that you want to export. The tool will move only files to PST format without any loss of data. It also provides Category Option within Advanced Setting that allows you to choose from various Categories : Mails, Calendars, Tasks, Jornals & Notes.


Preserve data

Preserve Meta Data of OST File

With the help of OST to PST Exporter, one can convert all emails along with attachments stored in offline data file to Outlook PST format. In addition, it keeps the metadata of all items intact as the original. For example, to, cc, subject, size, etc. It preserves the original formatting of OST file items even after conversion.


Export report

Complete Export Report Generation

After a successful completion of the Offline OST data to Outlook PST migration process, the software will generate a complete export report. This report contains all details of migration process with exported mailboxes and their destination path. If a user wants then, one can save this report in CSV file format for reference in future


Maintain Folder Hierarchy

Option to Maintain Hierarchy new feature

This feaure within the software allows users to maintain the folder hierarchy of the files in the same way as in the original files after the conversion. You can choose to either maintain folder stucture or not before converting .ost emails to PST.


Outloom 2016 and below versions

Supports Outlook 2016 & Below new feature

This OST to PST Converter Tool provides Support to the latest Outlook Versions. After the successful conversion from .ost file user can import OST to PST in Outlook 2016, 2013, 2010, 2007, 2003


Steps of Conversion of OST Data File to PST Format

Following are the detailed steps discussed to convert OST to PST

OST file to PST Converter
Step 1: OST to PST Converter
Preview OST Content
Step 2: Preview OST Content
Export OST to PST
Step 3: Convert OST to PST
Transfer OST to PST Conversion
Step 4: Converted OST file

Watch Video Explaining How to Convert OST to PST File

SysTools OST To PST Converter Specifications

Offline OST to Outlook PST Converter box

Size: 24.5 MB Version: 5.0

Trial Limitations

Demo version of software will generate Preview & Export only 25 Items per Folder from OST file to Outlook PST/ Office 365.

Download OST to PST Converter

Installation Uninstallation EULA

System Specifications

System Specifications

  • Hard Disk Space: 30 MB of free hard disk space

Supported Editions

  • Microsoft Windows – 2000, 2003, 2008, XP, Vista, or Windows 7/8/8.1/10, 2008/2012 (32-bit & 64-bit)
  • MS Outlook – Outlook 2000, 2003, 2007, 2010(32/64 bit), 2013 (32/64 bit), 2016 (32/64 bit)

Application Pre-Requisites

  • If you are using Windows 10, 8.1, 87 or Vista, then please launch the tool as "Run as Administrator".

Request For Software Customization

If you need to customize Outlook OST to PST Converter or need additional features then, Request Quote

Frequently Asked Question

What are the possibilities of accessing the contents of an offline mailbox when in orphan state?

How could conversion time be managed and organized according to custom requirements of the user?

What about the mailboxes storing more than 20 GB of data? How much time will they consume during conversion?

How can we get multiple mailboxes converted when found in a corrupt state?

How to re-import the OST file stored back to Exchange Server?

How to Open archive.ost file on a new machine?

How to merge multiple OST Files?

How Can I Convert OST to Office 365

How do I access OST data of 2 year back?

How to convert OST to PST file in outlook 2007 ?

How do I backup OST to PST?

How to convert Office 365 or Hotmail OST File?

Can I convert my outlook.bak to .pst file in outlook?

OST to PST Converter Order Now
Get an Overview of Offline OST to Outlook PST Converter Features - FREE and Licensed Version

Features FREE Version FULL Version
Add OST File
Two Scanning Mode (Quick & Advanced)
Preview PST Emails with Attachment
Windows 10 & All Other Previous Windows Version Supported
Split up large PST file by size
Export Outlook BAK to PST File Export 25 Items / Folder All Items
Export OST to Office 365 Export 25 Items / Folder All Items
Save & Export OST to PST File Export 25 Items / Folder All Items
Cost FREE $49

What Clients Say

Transferring all our mailboxes seemed like an impossible task. However, SysTools OST to PST converter made it look like everyone's cup of tea. There was not much that we had to do, as the program is quite intelligent and works just on click to go commands. Great job!

Albert Flander, USA

Completely satisfied with the performance of OST converter. We tried this application after trying a number of other tools to export OST to PST. I must say this application is better way to move OST file than that of the other vendors offering a tool of the similar specification.

Stephen Simons, London

Thanks a ton! I have been googling from a long time to convert OST to Office 365. I havent found any data related proper conversion. This tool has helped me move .ost file to Office 365.

Stephen Simons, London

I tried the manual procedure to transfer data from outlook bak as well OST file to PST file format but did not get a satisfactory result. Either, it export emails only or there is a loss of data. Therefore, I switch to OST to PST converter. I must say that what an effort was done by the developer in developing this utility. It exports all data items stored in BAK, OST file without any loss of data. Big thanks to the development team from my side

Alex, USA

The date-based filter option to convert data from Offline OST file selectively is the one I was looking for a long time. Thanks to this amazing OST to Outlook PST Converter for helping me in converting selective emails that fall under the specific date-range. I liked this software so much that I am going to suggest this tool to my colleagues also

Alaric, Brazil

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