STELLAR CONVERTER FOR OST 
257 reviews
OST to PST Converter
Stellar Converter for OST - powerful software to convert inaccessible OST files into Outlook PST files. The OST to PST software trusted by Microsoft MVPs and IT administrators, which converts all your mailbox components, emails, attachments, contacts, calendars, etc. with 100% precision.
- Converts OST file to PST - No file size limitation
- Converts encrypted OST into PST. Also converts IMAP OST file
- Supports Outlook 2019, 2016 & older versions.
- Easily export OST file data to Office 365, MS Outlook & Live Exchange (Technician)
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Features
Converts Large-Sized OST File
Stellar has rigorously tested its OST to PST converter tool for converting large-sized OST files. The software performs fastest conversion of large OST to PST in situations when Microsoft Outlook or Exchange Server is crashed or inaccessible, or Outlook is facing synchronization issues. It converts the OST file to PST and extracts the data with 100% precision.
Extracts All Offline Outlook Data File (.ost) Items
The OST to PST converter by Stellar extracts all the items from OST - emails, attachments, contacts, calendars, tasks, notes, journals, etc. The tool performs precise OST 2 PST conversion and maintains original integrity of mailbox items. It is the best solution for any situation that needs the user to move the OST file to PST and convert OST to PST without Exchange profile.
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Free Preview of Offline Outlook Data file
The software displays a detailed preview of the mailbox items stored in the converted OST file. The user can click a folder, email, calendar, or other mailbox items listed in the Preview pane to view its contents. The Preview feature helps in identifying and extracting the specific items from the offline Outlook data file (OST).
Conversion of Encrypted OST File
A user may face an error when trying to open an encrypted OST file, leading to loss of access to the mailbox data. Converting the encrypted OST file to PST (Personal Storage Table) file can solve this problem. The OST to PST converter by Stellar converts the encrypted OST to PST, thus allowing access to the mailbox data.
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Converts the OST into Multiple File Formats
The OST to PST conversion tool allows the user to extract the mailbox data in different file formats, such as PST, MSG, EML, RTF, HTML, and PDF. This feature allows the user to view the OST file contents in applications, such as Outlook, web browser, PDF reader, text reader, etc.
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Sorts & Organizes the Messages
The OST PST Converter software extracts OST file data in an organized manner while maintaining the original arrangement of mail items. Once the OST scanning is completed, the software allows sorting and organizing of the emails by Date, From, To, Subject, Type, Attachment, Importance, etc.
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Free OST to PST Converter
The tool allows free OST file to PST file conversion and extracts 20 emails per folder. Use this free OST to PST converter to scan the OST file. After scanning the Outlook OST file, preview the converted OST file and save the mail items in a PST (Personal Storage Table) by clicking the ‘Save converted file’ button.
Allows to Save & Load the Scan File
The OST PST converter tool allows the user to save the OST file ‘scan’ information as a DAT file to load it later for the conversion. This feature helps in splitting the OST to PST conversion process in two stages, doable at different times or on different systems.
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Converts Multiple OST Files in a Batch
The tool can convert multiple OST files into PSTs through a single batch process. The Batch Conversion feature is helpful when an organization is moving to a new email service and needs to extract mailbox data from several OST files. The Batch Conversion feature is available in Technician Edition.
Exports the OST Data to Office 365
The software can directly export the OST to PST converted files to Office 365. It allows the user to login to an Office 365 account and exports the mailboxes directly through its interface. The OST to Office 365 Export feature is available in Technician Edition of the software.
Splits the Large-Sized PST File
Technician edition of the software can split a PST file by Size, Date and Email ID. The tool offers to split the PST file in the sizes of 1-50 GB while preserving the original organization of the mailbox data. The feature helps in improving the manageability of large PST files.
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Compacts the PST File
Another great feature of Technician Edition is to compact a PST file by compressing all the attachments in a PST file or extracting and saving the attachments in a folder. It can also extract, compress, and save the attachments in a folder while preserving interlinks through the PST file.
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When to Use Stellar Converter for OST?
Export OST to PST
If you delete a user mailbox from Exchange and there is no backup, the only way to access the mailbox data is through the OST file. However, you cannot recreate or rebuild OST file if the Exchange user account is deleted from Active Directory. Stellar OST converter tool converts the inaccessible OST file into a PST file, which can further imported into Exchange Server.
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Manage Data files with Stellar Toolkit for Outlook
Advanced Stellar Toolkit for Outlook provides 8-in-1 solution for your OST & PST files. The tool easily converts OST to PST & exports mailbox data directly to office 365 or Live Exchange. The other tools allow to repair corrupted PST file, split or compact PST, merges PSTs, removes junk, & many more
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Converts Multiple OST Files to PST
If you are planning to shift your physical location and need to recreate the OST file without Exchange mailbox backup, then the only way is to extract data from the OST file. Stellar OST PST conversion tool can easily recreate and convert the disconnected or legacy OST files to portable file formats, such as PST or export it to live Exchange or Office 365.
Learn More Steps to Use Stellar Converter for OST
Step 1: Launch Stellar Converter for OST. Click Select Outlook OST in Home tab in the top ribbon. A pop-up screen will appear to Browse or Find the OST file for conversion.
Compare Editions
- Converts OST into PST format
- Converts all offline mailbox items
- Shows Free preview of all offline mailbox items
- Saves & loads scan data
- Recover deleted mailbox items displayed in Red color
- Saves the mailbox data in PST, EML, MSG, RTF, HTML, or PDF file formats
Technician
Convert multiple OST files and export to Exchange or Office 365
- Includes all features of Corporate
- Converts multiple OST files in batch
- Compacts & Splits PST file
- Exports to live Exchange
- Exports to Office 365
- Exports to MS Outlook
- Exports contacts in CSV file
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Technical Specifications
About Product
Stellar Converter for OST
| Version: | 11.1.0.0 |
| License: | Single User |
| Edition: | Corporate, Technician, & Toolkit |
| Language Supported: | English, German, French, Italian, Spanish |
| Release Date: | May, 2021 |
System Requirement
| Processor: | Intel-compatible (x86, x64) |
| Memory: | 4 GB minimum (8 GB recommended) |
| Hard Disk: | 250 MB for installation files |
| Operating System: | Windows 11, 10, 8.1, 8, 7 |
Documents
Installation Guide 
User Manual 
Knowledge Base Product Related Articles
Installation
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EULAStart Using Stellar Converter for OST Today.
- No File Size Limitations
- Trusted by Millions of Users
- Awarded by Top Tech Media
- 100% Safe & Secure to Use
*Free Download enables you to preview the converted file and save 20 items per folder.
FAQ
Follow these steps to convert an OST file into PST file by using the software:
- Run Stellar Converter for OST
- Browse and select the Offline Outlook Data File (.ost)
- Click 'Convert' button to start the conversion process
- Click 'Save Converted File' button to save the mailbox data
- Select Outlook Data File (.pst) as the file format to save the converted data in PST file
- Click ‘Browse’ to specify the location and click ‘OK’ to save the data
The software will scan the OST file & list all the items preview in a tree-structure view. Verify the data and save them at your destination location.
- Launch Microsoft Outlook.
- Open File tab.
- Click on ‘Open & Export’
- Now Select Import/Export option.
- Click on ‘Import from another file or file’.
- Click on ‘Next’ button.
- Select Outlook Data File (.pst)
- Click on the Next button.
- Browse the file to import & Click on the ‘Next’
- Choose Finish.
Now Microsoft Outlook will start importing the items of your Outlook Data File (.pst) immediately.
The Demo version of the software converts the Outlook OST file and previews the complete mailbox data. It also allows you to extract and save up to 20 items per folder.
Yes, Stellar Converter for OST allows you to search for the OST files (Offline Storage Table) stored in any folder, sub-folder, or drive in your system. Use 'Find Outlook File' feature of the software to locate the OST files.
You would need to convert an OST file into PST file in any of the following cases:
- You need to access the emails from a mailbox that is deleted from Exchange
- You are facing issues while synchronizing Outlook with Exchange Server
- You need to migrate the email organization to a different platform
- You need to recreate or rebuild the OST file in case of an Exchange Server crash/disaster
- You are facing difficulty with Outlook Import/Export Wizard
- You need to change the location of the offline Outlook Data File (.ost) in Microsoft Outlook
- You need to move Outlook OST file to another disk
Or facing an error while accessing OST file –
- Outlook is using an old copy of your Offline Folder File (.ost). Exit Outlook and delete the .ost file, and restart Outlook.
- errors have been detected in the file outlook ost
- outlook cannot configure OST file
The total time for converting an OST file into a PST file depends upon the OST file size. Stellar Converter for OST takes approx. Seven minutes to convert per GB of OST file into PST.
The software can save the converted OST file into MSG, EML, PDF, RTF, or HTML file formats.
The software does not perform any action on the corrupted OST file. It converts the corrupt OST file in PST file, thus enabling access to the OST file data.
If you face any problem during or after an OST file conversion, you can contact the Stellar support team: support@stellarinfo.com
The software is available in two variants – Corporate & Technician. If you only need to convert an OST file into PST file, then you should go for Corporate. If you want to convert and also compact or split a PST file, then you should use the Technician edition. The Technician edition can also export the OST file data to Office 365.
You can easily take backup of your Exchange data by converting the OST file to PST file format.
Yes, the software converts OST file that is not connected to Exchange Server.
Yes, the software guarantees OST to PST file conversion; however, we strongly recommend trying the free Demo version of the software which previews the mailbox data stored in OST and also converts up to 20 mailbox items per folder. After ascertaining the software effectiveness, you can activate it with a license key and then convert & save all mailbox items in PST or other file formats.
Yes, you can open the converted OST on another system after saving the OST file in a format such as PST, EML, RTF, or other supported file formats.
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