Download Outlook OST to PST Converter Free

Best OST Conversion Tool for orphaned & corrupted Outlook Files to Export OST Emails, contacts, calendars, tasks, notes, attachments & journals to PST format included Batch Conversion, Advance Filter, data Extraction, Cloud Migration Features

(Average Rating 4.6Based on 188rating)
OST File Exporter to Convert OST to PST
for MAC users

Converting OST to PST File Without MS Outlook

Softaken OST converter software is an affordable solution that recovers data from corrupted/inaccessible/damaged OST files and exports them into various file formats within a few clicks. It is embedded with multiple saving options to export OST files into PST, EML, EMLX, MSG, VCF, ICS, MBOX, PDF, TGZ, HTML, NSF, Office 365 and many more.

  • Quickly Scan and Repair corrupted, damaged, orphaned or inaccessible OST files
  • Data Integrity Preservation to Ensure All Data are converted Accurately
  • Selective Conversion Option to Choose Specific Folders to Export
  • Large Sized OST File Support with Performance Issue
  • Support Encrypted (Password Protected) OST Data
  • Preview features Allows to See the content before conversion
  • Data Filters Option to Help Narrow Down the Data to be converted
  • Perform Batch Migration of OST emails, contacts, calendars, task etc.
  • Extract all Email addresses from emails TO, CC & BCC properties
  • Multiple Saving options to save OST files into PST , EML, EMLX, MSG, VCF, ICS, MBOX, PDF, TGZ, HTML, NSF, Office 365
  • Offer option to export Outlook Address Book quickly
  • Support MS Outlook 2019, 2016, 2013, 2010, 2007, 2002 & Other Version
  • Data Mapping & Folder Structure preservation to maintain original folder structure
  • Softaken OST file to PST conversion tool is compatible with Windows 11, 10, 8, 7, & XP etc.

When to Use Softaken Converter for OST?

Read Why We need to use OST to PST Converter Software?

solve ost data loss

Prevent OST Files from Data Loss

Offline Outlook data file or OST files are prone to corruption, even working with it user may face issues like accidental deletion or with OST file size issues. Hence with the help of Softaken OST to PST converter one can save or backup OST files into PST or PDF format to prevent from unnecessary data loss.

resolve exchange errors

In Case of Exchange Server Downtime

Due to power failure or MS Exchange server maintenance, you will not be able to access your Outlook mailbox as OST files need to be synchronized with Exchange server. In such condition you need to export OST to PST and import it into MS Outlook application to access mail items.

solution for ms outlook errors

To Overcome MS Outlook Errors

Convert Outlook OST files into PST format if you are getting errors like "Your offline folder file could not be configured.\\ComputerName\FolderName\Outlook.ost.'" or 'The operation failed due to a registry or installation problem. Restart Outlook and try again. If the problem persists, please reinstall.'

ost to pst features in detail

Prominenet Features of OST to PST Converter Software

Convert Files

Open & Convert PST to PST without MS Outlook

There is no requirement to install MS Outlook to perform the conversion. Users can Open Outlook OST file without having Outlook. The software is independent to work alone and once OST file is scanned, the tool provides an instant preview of Offline OST items. From there, a user can right click on any message and save it in HTML/MHTML format to view any of the web browsers. Similarly, contacts are saved in vCard format and calendars in ICS format.Learn More

Convert Files

Convert OST File to PST & Multiple Other Formats

The OST to PST Converter software considers complete OST file including its emails, contacts, notes, journals, to-do-list, and other informationfrom OST file into PST format. Moreover, the software provides converting OST file into different file formats such as PST, EML, EMLX, MSG, MBOX, HTML, and vCard formats. Emails as well as its attached files are safely exported into PST format without any hurdles and delays on the way of migration.

Convert Files

Export Selected Folder

The OST File Exporter is easy to handle and there is no need of technical expertise to export Offline .ost file into .pst format. Users when load OST file and get preview of OST file. At that time, users are provided with options to export selective items or complete OST file into personal storage table format. Some simplified clicks are needed to perform the migration. Moreover, users will get these options separately to choose complete or desired folders from OST file for migration.Learn More

Convert Files

Convert Encrypted & Password Protected OST files

There are no worries if you have a password protected Outlook data file. The OST to PST software works in a simplified manner and export complete mailbox items without any trouble. The users will not face any issues and any data harm while exporting OST file into PST format. 100% accuracy is maintained during the export process. Users can save the conversion results by creating a new PST file on their local system. Learn More

Convert Files

Exclude Empty Folders from large Sized OST Database

The users have full freedom to export any size OST file. Free OST to PST converter supports any large size OST file. Plus, users have the facility to exclude blank folders from the list of conversion. For this, the users need to enable 'ignore empty folders' option and this will not affect the folder hierarchy and you will find results after excluding empty folders. In this manner, extra items can be easily removed from OST file and hence the conversion task be performed without any extra efforts.

Convert Files

Skip Unwanted Folders and Export Desired Database from OST

Once OST file is being scanned by the application, the users will get complete mailbox preview where all folders inside OST file are shown on the left side of the wizard. A user can tick mark required folders from there. In this way, a user can perform the required items conversion in a safe and quick manner without any hurdles. Plus, a user can save the exported items to their defined location without any disturbance and losses.

Convert Files

Preserve Original Language & Meta Data

Safety of data is one of the essential features during migration of OST files into PST format. The software takes care of it and perform the conversion in a proper way. It keeps all metadata items intact as original. To, cc, subject, bcc, attachments and the formatting applied to the emails are maintained properly. The original language of the data is duly preserved by the utility. Overall, security of data is on the topmost priority.

Convert Files

Maintain Folder Hierarchy in All Export Options

There will be no changes in the internal hierarchy of emails or folders while users convert .ost file into .pst and other formats provided by the tool. The application makes the conversion by organizing all data in a sequential manner as it was earlier before the conversion. No folder is missed and misplaced during the migration of offline storage table OST into PST format. You can say, the software is a trusted one app on which users can rely to export offline OST to PST format.

Convert Files

Support All Windows Operating Systems

The OST File Conversion software can be easily downloaded on all versions of Windows such as Windows XP, Vista, 7 and higher versions. There is no effect on the processing by this tool even you are running other tasks in the background on your desktop. The application doesn't disturb other tasks and it will not affect the speed of the conversion.

Convert Files

Work with all MS Outlook Applications

Softaken OST to PST converter provides complete support to all major versions of MS Outlook. After successful conversion from OST file, a user can import PST file into MS Outlook 2019, 2016, 2013, 2010, 2007, 2003. Without any trouble, you can read PST file on all editions of MS Outlook. The migration can be easily carried out in the absence of Microsoft Outlook and users can pick any file format to save OST file from the available formats. Learn More

Advance Filter

Deep Filtration options

Once PST file is loaded and display on the software screen, the users can pick items from OST file for conversion. Apart from that, users can filter the database more deeply with the Advanced filter options. Here, users can filter the database according to date range i.e. by specifying a start date and end date to export OST database to PST & multiple formats. Users can also filter the database according to subject, from, to, etc. and simply apply the filters. By these, the only required database can be exported from OST file.

export email address

Extraction of email addresses

OST File Exporter is capable to extract only email addresses of multiple OST files at a time. A separate text file will be created to save email addresses of every OST file. The tool itself ignores duplicate email addresses of each file. There is an option 'include sent item folders' by which one can voluntarily include or exclude email addresses of sent folders. There is no damage and misplacement of any email address during the extraction process with this risk-free application.

Extract Attachments

Extract attachments from multiple OST files

OST to PST Converter lets user to export multiple OST files so with this, users have the options to extract attachments from multiple OST files. All the selected OST files complete database or required database is exported by users as per their requirements. Moreover, the application works completely as per user instructions. The attachments and email formatting are well preserved and exported with OST emails in a risk-free manner. The users don't need to take tension of any loss and file misplacement with OST conversion program.

Open Multiple OST

Bulk OST files migration

Batch OST ConverterTool ensures that the conversion is performed under a safe roof. Using the folder mode, it is possible for users to convert multiple OST files in a single attempt. A user can export OST files of every size. Irrespective of file sizes, the utility deals with OST files of various sizes. There is no effect on the tool's performance due to the number of OST files. It's working efficiency remains the same whether you export single OST file or multiple OST files.

Convert calendars

Convert Calendars in ICS & MSG formats

The application provides users the option to export calendars of OST files into ICS format. It is a universally accepted format for saving calendar entries. Apart from it, users can save calendars to MSG format to directly import OST calendars in MS Outlook. The MSG file having calendars can be simply imported to all MS Outlook editions. After providing the instructions to the application, it hardly takes few minutes to convert OST File calendars into ICS and MSG formats. In this manner, users can access OST file calendars to Thunderbird, Apple Mail, and other applications. Learn More

Convert contacts

Convert contacts in CSV and MSG formats

Softaken OST to PST file converter exports Address Book of OST into CSV and MSG formats. By exporting OST contacts into MSG format, these contacts can be easily imported to Microsoft Outlook application. Moreover, CSV file format is supported by various applications like Lotus Notes, Thunderbird, Apple Mail, Gmail, Yahoo, etc. In this way, OST contacts can be easily accessed on various platforms. Users can export unlimited contacts from OST file and with some clicks, the OST contacts are ready in CSV format whom they can access cloud-based and various desktop applications. Learn More

Tools Faq's

Follow below Steps to to transfer OST file to PST

  1. Step 1– Download & launch the software on your Windows system.
  2. Step 2– Select Browse button and add OST file of any size.
  3. Step 3– This will show you mailbox preview of OST file.
  4. Step 4– Select Convert to PST in Export Type. Here, you can also select some folders or complete OST file.
  5. Step 5– Provide an output destination to save the conversion results.
  6. Step 6– At last, click on the Convert Now button.
OST File Conversion is the process of converting OST file into Outlook PST (Personal Storage Table). This conversion helps to transfer emails, contacts, calendars, task, attachments and Other data from OST file to PST.
There are several reasons to Move Data like hardware failure, accidental deletion, or mailbox corruption, Exchange Server Migration, Switch companies or organization, Access Mailboxes on Different Devices, Backup & Archiving Outlook Data, Exporting Selected Data, Recovery from OST corruption, Accessing OST file in Different Email clients etc.
A single OST file is exported at a time in personal license but batch option is available in the Business and Enterprise License. You can Process multiple OST file conversion at a time
Yes, Using Softaken OST File Exporter, You can export Password protected OST files into any provided file formats.
This software will help you to convert OST files on Windows OS, But if you required OST to PST Conversion on MACthen check our MAC OST Converter Tool here
Yes, This tool will preserve complete mailbox structure as it is. You can also choose selected folders to Export into any provided file extensions.
OST and PSTare the two major file formats of MS Outlook to store data. MS Outlook files including emails, messages, attachments, tasks, calendars etc. can be stored in OST or PST formats. MS Outlook files are saved on computer or a mail server. If the data of MS Outlook is saved in OST or PST, in both formats there are no such changes seen in the file structure. Though, some differences can be noticed.

OST, the file extension is also known as Offline Storage Table that clearly indicates its work capacity. It creates an offline folder to make offline copies of Exchange Server mailbox data. In a MS Exchange Server, all types of mailbox items are exported and saved on the server. A local copy of these mailbox items can be saved in a local computer by configuring MS Outlook. And these copies are considered as OST. No matter the network is either down or running, OST files can be opened and operated. Make sure that the Outlook is in Cached Mode in order to access OST files.

PSTor Personal Storage Table: PST is popular format of Outlook. It is widely accepted to save email communication files including messages, calendars, tasks, notes, appointments, events, RSS These files are saved on a local computer. These files are easily transferred to system to system, providing easy distribution of files.Learn More

Software Specifications

System Requirement

ProcessorAny Pentium Class

Operating SystemWindows 11, 10, 8.1, 8, 7 & Other

Memory512 MB Minimum

Hard Disk100 MB of free space for software installation

Software Delivery

ElectronicVia Email


Interface Available

Language SupportedEnglish

Support OptionEmails, Chat & Skype

Customer Reviews

What Our Customer Says


Patrik Scherer

United States

  I tried the free version before purchasing the license version of Softaken OST to PST converter, but free version only shows the preview of recovered emails then I contacted support team and ensured will it work or you will refund. They agreed and then I purchased the license version and repaired all my corrupted OST files very smoothly.

Sharon Gillings


  I download this Softaken convert OST to PST file wizard from Cnet website and tested with my 40GB OST files and successfully checked complete preview. Licensed version is easy to export OST files into Outlook and other file format. Great job team.   

American Jewish Archives


  Great utility, have been purchasing OST to PST tool to transfer my data for Outlook for 1 year ago. Have tried em all before. None of them compare, Softaken OST File Exporter as it uses very little memory and transfer complete OST files quickly. The conversion rate is 100% and I love conversion speed.   

Stephan McVaugh


  Have had OST File conversion for years, worked great. Does all that expected of this utility for OST to PST migration. It offers multiple options and I can also export few messages in HTML file format that is great feature.