Turgs Video

All-in-One OST File Converter

Convert .ost file data to multiple file formats - Supports orphan, IMAP, and Cached Exchange OST File

  • Recover & convert corrupted, encrypted, and password-protected OST files.
  • Easily recovers deleted/ permanently deleted emails from OST file.
  • Supports to convert OST file to 10+ file formats such as PST, MSG, EML, EMLX, PDF, MBOX, HTML, MHT, XPS, RTF, DOC, & Zimbra.
  • Batch conversion option to convert multiple OST files.
  • Option to split OST file into smaller parts.
  • Supports all OST files from any version of Microsoft Outlook & Exchange.

Compatible with all latest Windows OS

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* Try the free demo of OST Wizard tool to check its ability to convert OST to Outlook PST as well as OST to multiple file formats. The free OST Conversion tool comes with the limitation of 25 email/folder export.
* Safe & Secure Virus Total Safety Score: 100%

Why to Choose Turgs OST Converter Wizard?

Complete solution to recover and convert Exchange OST files.

OST Process


Export OST Emails

Convert & export emails with its original metadata (to, cc, bcc, from, sent/receive date & time, etc) information from OST file to desired file format.


Export OST Contacts

Convert & export OST contacts to Outlook, Thunderbird, and other formats by keeping all contact details unaltered like photo, attachment, email fields, etc.


Export OST Calendars

Convert & export calendars from OST file with its all properties such as add day events, appointment, meeting schedule, invitees, etc. to desired format.

Features & its Benefits

Convert Files

Convert OST to PST File Format

The software is designed to convert the complete OST file data to Outlook PST file format such as emails, contacts, calendars, tasks, notes, etc. without losing a bit information. The application supports all the Outlook editions (2016, 2013, 2010, 2007, 2003, 2002/XP) to migrate OST to PST within few moments.

Multiple Formats

Convert OST File to Various File Formats

OST Wizard provides various options to convert the orphaned/IMAP OST file data to desired file format in healthy form such- MBOX, PDF, EML, EMLX, MSG, HTML, MHTML, XPS, RTF, DOC, and Zimbra file format. This is the complete tool to open, convert and access orphaned OST files by fixing them.

File Recovery

Inaccessible OST File Recovery

The advance OST file recovery feature in Turgs OST Wizard enables you to repair and convert corrupted/ highly encrypted/ passsword protected OST files in desired file format. It automatically starts the scanning process when you select OST file. After getting the preview of OST items, you can save OST file as PST or other formats.

No Requirement

No Exchange & Outlook Connectivity Required

The application is algorithm in such a way that it does not require any connectivity with the Exchange Server. If MS Outlook is connected with the Exchange while performing the process then, disable it before beginning the procedure of conversion.

Email Platform

Import OST File into Multiple Email Clients

OST Wizard offers option to fix and move OST file to MBOX and other file formats supported email clients. You can easily import Office Outlook OST to Thunderbird, Apple or other email clients file format to regain the access of OST file. Software also supports to convert IMAP and cached Exchange OST to multiple file formats to fix OST file issues.

Selective Conversion

Manage Large OST File & Export Required Items

The utility gives an option to split the resultant PST file according to folder in case the size of the OST file is too large or in need to export only selected OST items like move calendar from OST to PST, contacts, Journal, Notes etc. The users can select the required folder from preview and the application will export selected items into PST or other formats.

Data Integrity

Preserves the Data Integrity

The software is programmed in a way that it retains the integrity of data after conversion of Microsoft OST file. It preserves the Meta properties (Subject, to, cc, bcc, sent/receive date and time etc.), formatting, folder hierarchy, attachments, etc. in original form. There will be no modifications done with the original data styling after conversion.

Split and Merge Files

Option to Split OST File New Feature

Convert OST to PST and Split by Size [2GB, 5GB, and 10GB]: To manage size of converted PST file, software v4.0 provides split option that will be helpful to split OST file into smaller parts.
Split OST by Folder [Inbox, Outbox, etc.]: For large sized OST file, you can convert OST file by folder. Just select the required folder and convert into PST format.

Batch Conversion

OST to Zimbra and Batch Conversion Option New Feature

OST to Zimbra conversion option is available in PRO version of OST Wizard. Batch conversion of OST file into Zimbra Desktop or other file format is now possible with the help of newly added feature that also makes you able to create a single PST file for all the browsed OST files or create separate PST file for each user's profile.

Avail all the Benefits of OST File Converter

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Rated 4.4/5 based on 94 customer reviews

How to convert Outlook OST Mailboxes


Check software screenshots to know the working process of OST file conversion. It provides you GUI interface with self-explanatory steps to convert OST to 10+ file formats.

Add Single or Multiple OST Files and Scan

Step 1 : Launch Tool and Select OST file or Folders and Scans.

Get OST Preview and select required file saving option

Step 2 : Get Preview and Select Required Option for Saving Items.

Select Destination Path and Convert OST File

Step 3 : Select Destination Path and Convert OST File(s).

Product Guide

Launch OST converter and select single OST or full of OST folder and scans the items.

Add Single or Multiple OST Files and Scan

Click on OST items (emails, contacts, tasks, calendars, etc.) to get the preview in software wizard.

Get Preview of Complete OST Items

There are two options to convert OST files:

  • Merge OST Files: To merge multiple OST files into single PST, leave check box empty with labelled "Separate PST per user".
  • Split OST Files: To split large OST files into smaller parts, select check box option with labelled "Split PST" and select size e.g. 2GB, 5GB, and 10GB.

Select Required OST File Saving Options

For single file format, there are different File Naming Options that allows you to save converted file with descriptive file names according to Subject, Date, and From field.

Different File Naming Option for Single Format

Choose destination path and click on "Convert" button to start the conversion process.

Destination Path and OST Conversion Option

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Home User License

For Personal use:

3 Saving options only: PST, MSG, EML


Pro License

For Business purpose:

Multiple saving options: PST, MSG, EML, EMLX, PDF, MBOX, HTML, MHT, XPS, RTF, DOC, & Zimbra.


Payment Options

Note: Software will get delivered on your registered email id, within 15 minutes after placing the order.

Product FAQs

A: No, Microsoft Office Outlook should not be connected with the Exchange server while performing the OST file conversion. If it is connected then, disable first before starting the conversion process.

Get more inforation about Exchange Server

A: Yes, the application is programmed in such a way that it helps to create PST file from corrupted as well as orphaned OST file data. This application can be used to create backup of OST file in required file formats.

No, OST Wizard only supports Windows based Operating system to perform the data conversion from OST to desired file format, i.e. MBOX, EML, MSG, PDF, EMLX, HTML, MHTML, XPS, RTF, and DOC.

Get more information about MAC OS

This error message is the result of Outlook oversized OST file problem. Just like any other data files, OST also comes with predefined file size limitations. If OST file grows beyond the defined size limit, then OST file oversize issues will start showing up. If we consider Unicode OST file size, it is by default 20GB for Outlook 2007. Higher edition of Outlook like Outlook 2016/2013/2010 comes with an extended file size till 50 GB. It is always advised to maintain the file size of OST to 20GB only to avoid encounter with OST file size related errors. Some of the common error messages reported by Exchange – Outlook OST file users related to OST file oversize issues are:

  • Cannot synchronize the OST file with the Exchange server
  • Cannot open or load the OST file at all

As a help to reduce OST file size, users may follow the traditional method of deleting unwanted mailbox items or empty deleted items folder. This practices are not a permanent solution as in recent future the same issues may arise with the growing size of Outlook OST files.

Get more information about Offline Outlook Data File (.ost)

Generally to turn on Cached Exchange Mode, it requires that your Outlook profile should contain an Exchange account. Other than this the reasons may lead to the restrictions kept by your Exchange server administrator. Exchange administrator have the power to disable such functionalities. So, contact your Exchange administrator and get the issue resolved.

Get more information about Turn on or off Cached Exchange Mode

MS Outlook saves the offline OST file at different locations depending upon the operating system being used. You can locate Outlook OST files at the following location according to your system specifications:

The default location of OST file in Office 2007 and all above versions is as follows:

Windows XP:

  • C:\Documents and Settings\user\Local Settings\Application Data\Microsoft\Outlook

Windows 10, 8.1 & below latest Windows editions:

  • C:\Users\user\AppData\Local\Microsoft\Outlook

Get more information about Outlook Data files (.pst and .ost)

If you find OST file corrupted and want to delete it, you can follow the steps:

  • First Stop Outlook if it is running
  • Type Type "%LOCALAPPDATA%\Microsoft\Outlook\"
  • Get into the explorer panel and locate the OST to be deleted
  • Press Delete option

Before attempting to delete OST file due to any corruption issue, it is advised to try OST File Converter tool to save valuable information from OST file.

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