Convert Microsoft OST file data into PST file format easily with OST to PST converter. This tool is potent enough to migrate large OST files into PST file with complete data and folders. You can open, convert and save the emails / contacts / calendars / Tasks / notes /Journals / or any other customized folders into Microsoft Outlook .pst format. Perform a hassle free migration with 100% results to import OST in MS Outlook using Magus OST to PST conversion Tool.

  • Convert multiple OST file into Outlook PST file format
  • Export emails, contacts, calendars, tasks, notes, journals
  • Option to Save OST mails into EMLX / EML / MSG and MBOX formats
  • Tool maintains the folder structure during OST to PST conversion
  • Convert inaccessible OST file to Fix all OST file errors
  • Support all MS Outlook & Office 365 versions to open converted PST file


Current Version: Version 2.2

Last Updated: 15th June 2023

100% Safe and Secure

Testimonials from Our Valued Customers

"I was skeptical about OST conversion tools, but this one blew me away. OST Converter retained email structures perfectly, and the batch conversion feature saved me hours of effort. A true gem for anyone dealing with OST files."- Sarah M.

"I can't thank OST Converter enough for helping me recover valuable emails from a corrupted OST file. Its straightforward interface and efficient performance turned a potentially stressful situation into a breeze. My search for a dependable OST conversion tool ended with OST Converter" - David

"From a non-tech user's perspective, Magus OST Converter was a savior. It guided me through the entire conversion process, and the end result was a perfectly converted file that I could easily import into my new email client." - Duane

"Magus OST Converter's advanced features and smooth interface exceeded my expectations. It made converting Outlook files a walk in the park. OST Converter not only converted my files flawlessly but also provided excellent customer support. It's a game-changer" - Alex

All Features of OST to PST Converter

Convert OST to PST File

OST conversion tool is an all in one software to help you convert large OST files into PST format. This software has the ability to open inaccessible Microsoft OST files and convert them into PST format keeping the meta data intact.

Convert Multiple OST Files

Magus OST to PST converter can efficiently export multiple OST files into PST file format. If you have several OST files then choose "Add Folder" option in software to convert each OST into PST file format.

Maintains Folder Structure

OST to PST converter keeps the heirarchy of OST file intact while saving it into PST file format. There will be no change in the tree structure of folder present in an OST file and you can smoothly open it in MS Outlook.

Convert Large OST Files

Usually the OST files are large in size and our software has the ability to read and convert the large OST file content in fraction of seconds. The tool can easily handle any size of OST file and quickly export the data from an OST file into PST format.

Convert OST to other Formats

Besides OST to PST, this converter is capable to export OST into other file formats like MBOX, EML & MSG. For instance, if you want to open OST file in Thunderbird then you can opt MBOX format to convert OST as MBOX. Similarly, you can select EML or MSG depending upon your need.

Fix OST file Error

If your OST file is showing error message and you want to fix the issue then OST to PST converter can help. This tool can read corrupt OST file and convert it to a healthy accessible PST file that you can import to in MS Outlook or Office 365 account easily.

Support All MS Outlook Versions

Magus OST to PST converter support all version of MS Outlook and Outlook 365. You can convert orphan, old or inaccessible OST file created by any MS Outlook account into a healthy PST file without any data loss.

Complete Data Migration

Magus OST to PST converter efficently exports complete data from an OST file into PST format. Software can migrate emails, contacts, calendars, tasks, notes, journals and all other folders without any data loss.

System Requirements

Know what all you need to use Magus OST to PST Conversion Tool

Trial Version:

The trial version of Magus OST Conversion Tool will let you convert 10 emails from each folder of an OST file. For complete unlimited conversion you have to purchase the license version.

System & Hardware Requirements
  • Minimum 512 MB RAM
  • Minimum 1 GB of free Hard disk space
  • Processor: Pentium Class
Compatible with Windows PC:
  • Windows Vista (32 and 64 bit) SP1
  • Windows 7 (32 and 64 bit)
  • Windows 8 (32 and 64 bit)
  • Windows 10 (32 and 64 bit)
  • Windows 11 (32 and 64 bit)
Compatible with MS Outlook:
  • Microsoft Outlook 2003® SP3
  • Microsoft Outlook 2007® SP2
  • Microsoft Outlook 2010® (32 and 64 bit)
  • Microsoft Outlook 2013® (32 and 64 bit)
  • Microsoft Outlook 2016® (32 and 64 bit)
  • Microsoft Outlook 2019® (32 and 64 bit)
  • Microsoft Outlook 2021® (32 and 64 bit)

Screenshots Microsoft OST to PST Converter

Personal License

Business License

Enterprise License

$49 $29

$99 $79

$199 $149

Single User License

Suitable for upto 2 users / machines

24x7 free lifetime technical support

Lifetime free product upgrade

Multiple User License

Suitable for 2+ Users / Small business

24x7 free lifetime technical support

Lifetime free product upgrade

Enterprise User License

Suitable for big companies or organizations

24x7 free lifetime technical support

Lifetime free product upgrade

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Frequenly Asked Questions

Q: Do i need MS Outlook to perform the conversion?

A: No, you do not need Microsoft Outlook to be installed on your machine to convert OST into PST file format using our tool.

Q: I have multiple OST files, can i convert all of them together?

A: Yes, the tool can convert multiple OST files conversion at a time. If you have multiple OST file then choose "Add Folder" button to export complete conversion.

Q: Is there any limitation on OST file size?

A: No, the software does not impose any limitation on OST file size. Smoothly convert huge OST files of any size into PST with our wizard.

Q: Can i migrate OST mails to Apple Mail?

A:Yes, you can import OST file in Apple mail. This can easily done by saving OST to EMLX file format. Magus OST converter provides the option to save OST mails to EMLX format which you can import in Apple Mail directly.

Q: Can i use personal license to get the multiple formats option?

A: Yes, you can buy PL license of the tool to get full access to all the conversion options present in the tool.

Q: I can't see the PST file size growing while the conversion is still going on.

A: When the conversion is going on and you cannot see the PST file size growing then kindly check its size in properties. For this, right click on PST file >> Click on Properties. It will show you the current size. Also, you can refresh the folder where PST file is saved. If you still face the issue reach us at or connect to us via live chat.

Q: Why the progress bar keeps going back to 0% and starting again?

A: Our tool reads every folder and convert it one by one. That is why it goes back to 0% and starts again. It helps in thorough conversion and keeping the folder heirarchy intact.