Are you looking for the top OST to PST converter tool? Then, you have landed on the right page. As there are numerous tools for OST to PST conversion available in the market, it is not easy to select the right one. You need to check that the tool is efficient, reliable, and offers the best value for money. Keeping in mind these requirements, we have prepared a list of top 10 OST to PST converter tools. You can select the one which is best and suits your requirements.
Best OST to PST Conversion Tools - 2026
Below we have listed the top 10 OST to PST conversion tools, presented in order of recommendation.
1. Stellar Converter for OST
Stellar Converter for OST is one of the best OST to PST converter tools. This tool is designed to convert orphaned and inaccessible OST files into PST and other formats. This is a highly trusted and recommended tool by Microsoft MVPs and IT admins. It successfully converts all the mailbox items, like emails, attachments, contacts, calendars, etc., with 100% precision.
In addition, this tool is known for fastest conversion of large OST file into PST. It has a user friendly interface that makes it easy-to-use for even non-technical users.
Prominent Features:
• Converts inaccessible, orphaned, encrypted, or IMAP OST to PST.
• Automatically lists OST files from the default location.
• Converts all offline mailbox items.
• Saves and loads scanned OST file data.
• Provides advanced filter options for precise conversion.
• Saves mailbox data to PST, EML, MSG, RTF, HTML, and PDF formats.
• Supports batch conversion of multiple OST files (Technician edition).
• Compacts and splits PST files (Technician edition).
• Exports data to a live Exchange Server (Technician edition).
• Exports directly to Office 365 (Technician edition).
• Exports contacts to a CSV file (Technician edition).
• Compatible with all Outlook and Windows versions.
2. Kernel for OST to PST Converter
Kernel OST to PST Converter is another tool that stands out when it comes to converting OST file into PST. It provides a seamless and secure solution for converting offline data (OST) file into PST with 100% accuracy and precision. This tool can recover emails, contacts, and other mailbox items from corrupted or orphaned OST files and save them into PST and other file formats.
Prominent Features:
• Converts emails, contacts, calendar, notes, etc., along with shared mailboxes and public folders.
• Converts single or multiple OST files.
• No Microsoft Outlook installation required.
• Supports OST files created in any version of Outlook.
• Works on both Windows and macOS systems.
3. SysTools OST to PST Converter
SysTools OST to PST Converter is another tool on which you can rely for converting inaccessible and corrupted OST files into PST and other formats. Its friendly user interface helps even non-technical users to perform the conversion process easily. This tool is verified by Microsoft MVPs as one of the best OST converter tools.
Prominent Features:
• Converts OST to PST, EML, PDF, and other formats.
• Saves OST data PDF, TXT, HTML, CSV, MHT, DOCX, DOC, and RTF formats.
• Easily converts OST to PST without Exchange profile or server connectivity.
• Supports conversion of large OST files.
• Compatible with all Windows operating system editions.
4. Aryson OST to PST Converter
Aryson PST to PST Converter is also one of the recommended tools for OST to PST conversion. This tool saves converted file items in varied formats, including PST, MBOX, MSG, EML, EMLX, and CSV. It also has advanced features that helps in removing duplicate items during the conversion process.
Prominent Features:
• Converts all OST file items, like emails, contacts, calendars, tasks, and notes to PST.
• Simple, intuitive user interface — no tech skills needed.
• Option to preview mailbox items to check accuracy.
• Available for both Windows and Mac OS.
5. Shoviv OST to PST Converter
Shoviv OST to PST Converter is also featured in our list since it easily converts OST file data to PST format. The software helps in the smooth recovery of all the data from the mailbox such as email, contact, task, and journal. Apart from that, the software enables you to store the converted OST files in various formats such as EML, MSG, vCard, and HTML. The software easily handles large OST files without the limitations of their sizes.
Prominent Features:
• Offers quick conversion of OST files to PST.
• Recovers corrupted OST files.
• Migrates data from OST to Office 365.
• Recovers deleted items.
• Split large resultant PST files.
6. Advik OST to PST Converter
Advik OST to PST converter is a professional-grade software for converting OST files into PST format. The software supports OST files generated in all versions of Microsoft Outlook. It preserves folder hierarchy, email attributes, and metadata after conversion.
Prominent Features:
• Converts all OST mailbox items including emails, contacts, and calendars.
• Automatically detects Outlook profiles from the default location.
• Repairs damaged OST files and creates new healthy PST files.
• Supports batch conversion of multiple OST files safely.
• Handles large OST files without size limitations.
7. Sysinfo OST to PST Converter
This OST to PST converter tool by Sysinfo is also one of the best tools to convert OST file into PST and other formats. This tool has a user-friendly interface that is makes it easy to operate for both technical and non-technical users. You can convert OST files into multiple file formats without any hassle. It also maintain the original folder hierarchy after conversion.
Prominent Features:
• Supports batch conversion of multiple OST files to PST format.
• Maintains original folder hierarchy and email attributes after conversion.
• Allows users to save OST to PST without installing the Microsoft Outlook application.
• Provides preview of mailbox items before saving.
• Allows to save all the attachments in a separate folder.
8. Softaken OST to PST Converter
It is one of the best OST to PST conversion tools for converting orphaned and corrupted OST files. This software quickly converts all your mailbox data like emails, attachments, contacts, calendars, tasks, and notes from OST to PST without losing any data. It has simple interface that anyone can use, even without technical knowledge.
Prominent Features:
• Converts OST to PST, MSG, EML, MBOX, PDF and other formats.
• Batch conversion of multiple OST files.
• Recovers data from corrupted OST files.
• Restores inaccessible mailbox items completely.
• Compatible with Windows 11, 10, 8, 7, & XP.
9. MacSonik OST to PST Converter
Macsonik OST to PST Converter is another reliable tool for converting OST file into PST. This software can easily convert large-sized OST files to PST and many other file formats. It removes duplicate emails across multiple OST files in one go. It also offers email migration option with or without attachments.
Prominent Features:
• Supports batch conversion of OST files to PST format.
• Split the resultant PST file to manage large exports.
• Converts OST files to PST, PDF, MSG, and various other formats.
• Fully compatible with all versions of Mac and Windows operating systems.
• Allows to export emails within a selective date range.
10. Cigati OST to PST Converter
This is another reliable yet powerful software that helps you convert OST files to PST format effortlessly. It can convert complete mailbox items – emails, attachments, contacts, etc. - to PST and other file formats. It maintains complete data integrity and accuracy after the conversion. This tool supports all versions of Microsoft Outlook and Windows OS.
Prominent Features:
• Previews OST file emails in a tree structure.
• Simple user-friendly interface.
• Multiple save/export options (PST, EML, MSG, PDF, etc.).
• Compatible with Windows and macOS.
• Supports OST files created in any version of MS Outlook.
Bottom Line
There are numerous OST to PST converter tools available in the market that claim to be the best. Therefore, shortlisting a single one can be a tedious task. Above, we have compiled a list of top 10 OST to PST converter tools that you can look for. Nevertheless, the most trusted, reliable, and highly recommended tool is Stellar Converter for OST because it provides features, like batch conversion, advanced filters, and direct export to Exchange and Microsoft 365.
Top comments (0)