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OST to PST Converter Tool

Free preview converted emails & Save in PST, EML, MSG, MHTML, Office 365 formats

With a user-friendly interface, OST to PST Converter is the best tool to convert an orphan OST file into a PST file that can be imported in any version of MS Outlook without any additional tweaking. The software also has the capability to repair the corrupt Outlook Storage data files (OST files) of any size.

Free Download - Use free trial version of the software to preview the converted OST file and save 25 items per folder.

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Features of Elephasoft OST to PST Converter

Incorporated with advanced features, this OST to PST Conversion tool is an apt solution to get access to the inaccessible mailbox items of OST.
Let us see critical features of this tool that make it a perfect OST to PST Converter for everyone.

Export OST

Conversion OST to PST files

Elephasoft OST to PST Converter tool offers you the seamless conversion of OST file into PST file. There is no change made to the original OST file. The OST to PST Converter software extracts data from the OST file and exports it to a new PST file while ensuring data integrity, properties, etc. as is. The new PST file can be imported in any version of MS Outlook.

Convert All Exchange Mailbox

Convert all Exchange Mailbox to Outlook

Developed with advanced technique, this OST to PST Converter software performs a complete conversion. It means all emails, contacts, notes, journals, calendar entries, attachments, and several other mailbox items are exported to a new PST file with full accuracy. A counter shows you the number of objects fetched from the OST file and converted to the PST file.

Multiple Saving Options

Multiple Saving Options

With this OST to PST Converter, you are not bound to perform a full conversion. You are provided with many saving options such as PST, EML, MSG, TXT, RTF, MHTML and Office 365. These saving options help you export the selected mailbox items to any of these formats. If you want to perform a complete OST to PST Conversion, then use the Save as PST option. Or, if you want to save a specific email, you can choose any other available option.

Find Emails for Selective Conversion

Find Emails for Selective Conversion

The OST to PST Converter software has been given with many options using which you can find the required emails based on their properties like To, From, Cc, Bcc, Subject, Date, etc. You can select the searched emails and export them to a PST file or any other format as per your requirement.

User-Friendly & Intuitive interface

User-Friendly & Intuitive interface

The OST to PST Software makes your task much more comfortable by adding instructions to every screen you come across. You can read those instructions to perform an error-free conversion of OST to PST that too while saving your precious time. You can even preview the mailbox items retrieved from OST file to ensure the quality.

Convert Encrypted OST file

Convert Encrypted OST file

For security reasons, users encrypt their mailbox files, but at times of conversion, many tools failed because the OST file is encrypted. But, with this OST to PST Converter, encryption is not an issue. The software can execute an effective OST to PST conversion even when your OST file is encrypted.

Free OST to PST Converter

Free OST to PST Converter

This OST to PST tool is a boon for the users who need a free converter to access only a few emails from OST file. The software allows saving of 25 emails per folder with its free trial version. If your needs are limited and can be fulfilled with the trial version, it's fantastic. However, if you want to save more than 25 emails, you can anytime upgrade to the licensed version in just a few clicks to get access to all emails.

Migrate OST to Office 365

Migrate OST to Office 365

The Elephasoft OST to PST Converter software provides advance option to Migrate & Export converted PST to Office 365. The software also allows migrate offline mailbox data to office 365, PST, EML, MSG, RTF, and MHTML.

Split Large Outlook PST files

Split Large Outlook PST files

If your OST file is a big one, then it is evident that the converted PST will be huge too. And, you know huge PST files are always a problem. So, to avoid this issue, the OST to PST Converter has been loaded with an advanced feature. With this feature, you can split a PST file into many small PST files. You can also compact a PST file with it.



Extensive support for Outlook 2019, 2016, 2013, 2010, 2007, 2003 and earlier versions is the best feature of this software. You can install this software on any version of Windows. You can even convert OST to Office 365 with this one OST to PST Converter. No need to buy any multiple tools for your varied needs.

Try It Out for Free

Familiarize yourself with the user-interface and the functional aspects of the software by downloading the software for completely free.

Software Features Trial Version Full Version
Converts OST Files to PST yes yes
Recover Corrupt OST Files yes yes
Export converted OST to Office 365 yes yes
Saves to PST, EML, MSG, TXT, RTF, MHTML yes yes
Preview of Recovered/Converted Files yes yes
Split & Compact large PST files yes yes
Free Technical Support (24*7) yes yes
Saving Items Capabilities Save 25 items only Save Unlimited Items (No Limitation)
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Customers Saying About Elephasoft OST to PST Converter

  • I used the OST to PST Converter after struggling with the different manual procedures. I was on the verge of losing emails that were very important for me. Thanks to the software I got the emails along with their attachments.

    Chris Lomas

    United States

  • I liked the user interface of the software and I did not even need to adjust the software with my computer system and after recovering the emails, all the emails and contacts were present as it is.

    Mark Williams

    United Kingdom

  • I had lost some of my earlier data in OST files when I tried to do a manual process through a video tutorial. Luckily, I used the software and recovered complete data instantly.

    Robert Heron


  • Thanks to this OST to PST converter, I grabbed some of my important articles that were present in various attachments of emails.

    Peter Leav

    United States

  • An important software for the Outlook users who are looking to strengthen their backup process as this tool will save you from any catastrophe.



Software Specifications

Compatibility & Support options must be installed in order to flawlessly operate OST to PST Converter Software

Operating System (32 or 64 bit): Windows 10, 8.1, 8, 7, Vista, XP, 2000, 98, NT, 95, Windows Server 2016/2012/2008 R2/2008/2003 R2/2003

Hard Disk: Minimum 50 MB for Software installation

Processor: Minimum 1 GHz Processor (2.4 GHz is recommended)

Supported Versions: MS Outlook 2019/2016/2013/2010/2007/2003/2002/2000/98 and 97, Outlook Express 6.0/5.5/5.0 and 4.0, MS Exchange Server 2019/2016/2013/2010/2007/2003/2000/5.5 and 5.0

RAM: Minimum 128MB of RAM (512MB is recommended)

Disk Space: Enough space to store recovered output

Screenshots of Elephasoft OST to PST Converter

FAQs - Elephasoft OST to PST Converter

A. Sir/Ma’am. You only need to follow the below-mentioned steps to complete the conversion –

  • Start the software and browse the corrupt OST file.
  • The tool will recover the file items and show you all the folders. When you click any email or contact, you will get the preview of it.
  • Click the Save button and there will be multiple destinations available for your files like – PST, EML, MSG, TXT, MHTML, Office 365, and RTF. Choose anyone.
  • When you choose the PST file, then click the Browse button to provide the destination for the output file. Also, choose the split option that when the PST file will be divided into a new file after reaching a definite size.
  • The PST file will be saved to the folder where you want it to save.

A. The default location of your OST file will be based on your Outlook application version. But the modern Outlook applications have the following location –

  • C:\Users\\AppData\Local\Microsoft\Outlook
  • C:\Documents and Settings\\Local Settings\Application Data\Microsoft\Outlook.

A. Yes, the converter will migrate all the attachments, contacts, calendar from OST to PST?

A. Yes, you can choose to convert only the selected items from OST to PST?

A. The tool puts special attention in protecting the content of the OST file and does not change the data while recovering or after the conversion.

A. Yes, the tool will recover and convert the large-sized OST files to a new PST file.

A. The tool provides a useful option while converting the OST files to PST. You can choose to divide the PST file after it reached a definite size. It will create multiple PST files for a single OST file.

A. Although the ultimate usage of the software is to recover the data from the OST file you can choose to only review the recovered data rather than saving them to an Output file.

A. You do not need to have an Outlook application to use the software for the OST file recovery but when you convert the OST file to PST, then you need the Outlook application to access the PST file’s content.

A. Yes, you will be able to get a clear preview of the data after the recovery.

A. The tool will not ask you to provide a name for the new PST file. It will create the PST file with the same name of the OST file. Later, you can rename the PST file.

How It Works? - Elephasoft OST to PST Converter Software