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OST to PST Converter
Recover and convert Exchange OST to PST file type.
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Outlook PST Converter
Convert Outlook .pst data file into multiple format.
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EDB to PST Converter
Recover and convert Exchange EDB to PST file type.
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EML to PST Converter
Convert EML files to various file types such as PST, MBOX, etc.
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PST to MBOX Converter
Convert Outlook PST for Thunderbird, Apple Mail, etc.
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OST to Office365 Converter
Export data directly from OST to Office 365/Live Exchange.
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KDETools » Products » OST to PST Converter

Microsoft OST to PST Converter

Repair corrupt OST and convert into PST, MBOX, EML, EMLX, MSG, HTML, vCard, vCal, Live Exchange Server, and Office 365 file types.

Software Video

Software Screens

How it Works? System Requirements

Quick Benefits & Features of OST to PST Converter:

(Average Rating 4.6 Based on 169 Reviews) Rating Distribution

5 Star (117)
4 Star (44)
3 Star (8)
2 Star (0)
1 Star (0)

Complete Converison of .OST mailbox contents Emails, Attachments, Calendar, Contacts, Notes, journals and all mailbox elements.
Restore all properties: such as: To, Bcc, cc, time, subject, images, date, & all attachments etc.
Convert OST items into various file types such as PST, MBOX, EML, EMLX, MSG, HTML, vCard, & vCal.
Restore deleted/ permanently deleted OST emails items.
Free Preview lets access to each messages before actual conversion.
Convert OST file and import into Office365 & Live Exchange Server.
Advanced option to export selective items only.
Splits Converted OST files into Smaller Outlook PST Files(s).
Repair & convert Office 365 NST file
Support conversion of OST files into MBOX for Mozilla Thunderbird & Apple Mail.
Export OST contacts & Calendars in vCard and vCal file format respectively.
Convert corrupted, password-protected, and highly encrypted OST files easily.
Advanced data Filtering Options to save data between Two Date Specific.
Support all Windows and MS Outlook versions.
No File Size Limitation and & Tested up-to 217.9gb of OST file database in Laboratory.

*Demo Version Recovers/ Preview complete OST items and allows to save only 30 items from each folder.

Installation Uninstallation End User License Agreement

Big Deal Offer! Get 25% Off on All Orders of OST to PST Converter – OFF of Use Coupon Code - KDE-YEAR2026

Awarded by

CNET Award
"Thanks You, the order worked very well and I was able to recover my OST files and convert to Outlook 2013 PST file format. Many Thanks for Your Help"

Softonic Award
"Thanks You, the order worked very well and I was able to recover my OST files and convert to Outlook 2013 PST file format. Many Thanks for Your Help"

FileHippo Award
"Thanks You, the order worked very well and I was able to recover my OST files and convert to Outlook 2013 PST file format. Many Thanks for Your Help"

Testimonials

"Vielen Dank für OST nach PST konvertieren !! Diese Anwendung hat die Möglichkeit, jede OST-Datei Problem zu entfernen und einfach OST-Datei in Outlook PST-Format zu konvertieren."

Franka Waltz, Germany

"Thanks You, the order worked very well and I was able to recover my OST files and convert to Outlook 2013 PST file format. Many Thanks for Your Help"

Peter Baris, United States

"La suppression accidentelle ou le compte configuré dans MS Outlook est une raison pour convertir le type de fichier OST en fichier PST. Merci à KDETools de m'avoir fourni une solution si merveilleuse."

Catherin Bardot, France

OST to PST Converter Video

Why do we need to convert OST to PST?

In so many scenarios, such as Exchange server crash, account deletion, virus intrusion, network troubles, and failure in OST synchronization and so on users cannot read OST files with ease. The mailbox cannot be synchronized and accessing OST files become almost impossible. The process for converting OST files into PST thus becomes an important need when you need to access OST file contents.

Prominent Features of OST to PST Converter

Convert Unlimited OST to PST

OST to PST Converter program, it's 100% guaranteed faster speedily Recover corrupt or deleted emails from Exchange Offline (.OST) files including all items, emails, messages, contacts list, calendars, folders and Attachemtns sub-folders etc. After restoring OST files and Convert unlimited OST to Outlook (.PST) file extension.

Import OST to Office365/ Exchange Server

OST to Office365 Converter is most brilliant program that will provide you advance option to convert OST file to directly import to a clouds-based Office365 Mailbox format including all mailboxes items. The users required to have is cloud office365 account with valid login credentials. This option is available with advance version.

Convert Selected OST Email/Folders

You can filter the important emails and folders of OST files that you want to converts. Our program allow to "Selective option" users can easily Export only selected emails, folders based on items type, date, range, folders, sub-folders into the desired file format.

Split Large PST files by File Size

You need to split large-sized Outlook PST files in required size format. Our tool recently edited new advance features with the included splitting function that lets you to Split exported Outlook PST file after a required size – up-to 1GB to 25GB so on.

Additional Advantages of KDETools OST to PST Converter

Complete Scan & Restore Corrupt OST files

The software provide you advance facilitates with complete Scanning of OST files & recovered corrupt OST database. The alternative can be very handy in situation when one would require scanned & recovered an OST file including every mailboxes items with all attachments, address book and save it Outlook PST files.

Preview of OST Emails Items

OST to PST Converter tool allow users have a fully displays "Preview"of recovered OST emails Items including all folders, sub-foldersm Emails, Messages, Address book, Contacts, Attachments and Deleted folders etc. The user allow to display OST emails and Save in New PST format

Convert Password-Protected OST FILE

OST to PST Conversion Tool also allow users to efficiently conversion of encrypted and password-protected offline .OST files into PST files without installing MS Outlook.

Maintains all OST Meta-properties

Microsoft OST to PST Converter is Most Trusted an advanced technology software ensures to maintain META-tag properties such as: Bcc, To, From, Cc, Date, Subject and attachments etc.

Maintains OST Items/Folders Original

By follow simple steps - while using OST PST Conversion tool to Maintains the internal folder organization of xxxx.OST file as it is, while creating healthy PST file. There will be no changes done in the internal hierarchy of emails or folders.

Export OST into PST, EML, MSG

The superb OST to PST Converter software allow user to choice the Save converted OST items to PST format, EML format and MSG file format at any saved desired location, picking choice of file format to saved individual selected Items/folders messages etc.

Multiple Saving Options for Individual file

OST to PST Converter tool to also allow users to Convert OST files into mutlile saving option like Outlook PST file, EML, MBOX, MSG file, MBOX, vCard (Contacts), vCal (Calendar), Office365, Live Exchange Server and Save them into various formats including HTML and RTF, MHTML, TXT Format files Respectively.

Supports all Exchange/Outlook's Versions

This Microsoft OST to PST Converter tools its compatibility with any Microsoft Office edition. It Supports whole any Microsoft Outlook Office version 2016 2013 (32bit & 64bit) Office 2010, Office 2007 Office 2003, Office 2002, Office 2000 and Office 98 or below version should be installed & configured.

Try KDETools OST to PST Converter for 100% Safe Conversion

Installation Uninstallation End User License Agreement

*Free download enables you to check OST file contents and save initial 30 messages.

OST to PST Converter Software - Specification

Software Specification

Trial Limitations

Trial of OST to PST Converter previews all the OST items & Export 30 items per folder.

Secured Software

System Specifications

Support : Windows 10, 8.1, 8, 7 & all below Windows version
Processor : Intel® Pentium 1 GHz processor(x86,x64) or equivalent
RAM : 2GB of RAM is recommended
Hard Disk Space : Minimum 100 MB for installation is required

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), 2019
Support recovery of OST file of 32-bit & 64-bit

Request For Software Customization

If you need to customize OST to PST converter or need additional features then, Contact Support Staff

OST to PST Converter - Software FAQs

What is the freeware demo version all about?

OST PST Converter software provides the facility of free demonstration version which is to test the skills of the tool. Demo will convert and save first 30 items from every folder.

Suppose I have forgotten OST file path to be converted, then can the software still perform conversion?

Yes, software is extremely beneficial to use when it is to search OST files from folders, sub folders or in drive of your PC. As soon as the file is searched, you can convert OST into PST.

What are the occasions where OST file needed to migrate into PST?

The following are the needs where you feel the requirement to convert OST into PST:

Accidental deletion of Exchange
Synchronization issues of Outlook and MS Exchange server
You feel the need to carry business emails to some other workplace

What is the expected time taken from software to complete the migration process?

OST to PST Converter is an instant result provider application. However, it depends on the OST file size. It is assured that tool scans the OST file prior converting and migrating OST into PST.

Which file formats are supported by your software when it is to save recovered emails?

Software supports converting OST files into file formats such as EML, MSG, RTF HTML and TXT.

Is tool supportive of recovering damaged OST files?

Yes, our third-party tool is excellent in repairing damaged .ost files. You can repair the OST files and then can import into PST files

Is there support proviso in case of any queries?

Company provides round the clock helpdesk facility. You can call at the helpline number and ask any query. In fact, company also resolves issues via email or remote services.

Is there any need for MS® Exchange server services while performing OST to PST Convert?

You are not required to have Exchange server services when it is to convert OST to PST.

Does OST to PST Converter needed original Outlook Profile for recovering OST files?

There is hardly any requirement for original Outlook profile when it is to perform OST files into Outlook PST.

Is the safe recovery and conversion guaranteed?

Yes, we are confident regarding functioning of the software even in extreme conditions. However, if you feel doubtful anytime, simply download the software in free of cost trial run so that you will be able to avail complete idea of the working of the tool and make out safety measures that tool uses.