If you are using Microsoft Outlook and need to convert an OST file to a PST file, you’re not alone. Many users face this issue when their Exchange server becomes inaccessible, Outlook profile is deleted, or they want to back up their emails. This article covers the 2 best methods to convert OST to PST file on Windows10 and Windows7 including the recommended EmailsGuru OST to PST Converter.
What is OST and PST?
OST (Offline Storage Table) is specially used to store the copy of your mailbox data from Exchange Server or IMAP server.
PST (Personal Storage Table) is a file format used for archiving, backing up, and importing/exporting Outlook data locally.
Converting OST to PST is necessary when you need to access mailbox data without being connected to the server, or when restoring data from an old or damaged profile.
How to Convert OST to PST File in Windows11/10?
Here I have mentioned 2 best method to convert OST to PST file in Windows10, 7, XP or any versions.
Method 1: Use of Professional OST to PST Converter
One of the most reliable and user-friendly methods to convert OST files to PST format is using EmailsGuru OST to PST Converter. It allow users to convert OST to PST file saving emails, contacts, calendars, notes and all other Outlook items. It is fully compatible with all versions of MS Outlook as well as Windows Operating Systems. Here are few steps to use it:
1. Download and install the OST to PST Converter on any available Windows system.
2. Launch the tool and click on Select File to add the OST file.
3. Click the Convert option and choose a destination your computer to save the PST file.
Why Choose EmailsGuru OST to PST Converter?
Fully Safe and Secure Conversion – Maintains folder hierarchy and data integrity.
Converts Large OST Files – Handles OST files of any size without crashes.
Supports Corrupted or Orphaned OST Files – Can even convert damaged OST files.
Preview Before Conversion – Lets you view emails, contacts, calendars, etc., before exporting.
Bulk Conversion – Convert multiple OST files to PST in one go.
Compatibility: Compatible with Windows 10/7 and Outlook 2019/2016/2013.
Download Free Trial: Most features are available in the free version, with a limit on exports.
Best For:
- Users with inaccessible or orphaned OST files.
- IT admins looking for fast, accurate conversions.
- Migrating OST data to another PC or Outlook profile.
Method 2: Use Microsoft Outlook (Manual Export)
This method is applicable only if the original Outlook profile (linked with the OST) is still accessible. Here are couple of steps to convert OST to PST using Outlook:
1. Open Outlook with the same profile that created the OST.
2. Go to File > Open & Export > Import/Export.
3. Choose Export to a file > Click Next.
4. Select Outlook Data File (.pst) then Click Next.
5. Choose the folders you want to export (i.e., Inbox, Sent Items).
6. Choose desired location to save the PST file then click Finish.
Limitations:
- Only works if the Outlook profile and server are still active.
- Cannot recover data from the corrupted, damaged or orphaned OST files.
- No selective export or preview options.
Final Thoughts
If you still have access to the original Outlook profile, the manual method may work for basic needs. However, for orphaned, inaccessible, or corrupted OST files, or for bulk and safe conversion, the EmailsGuru OST to PST Converter is by far the best option available.
