Convert OST to PST

Best OST to PST Converter software is a complete user handy tool for convert OST to PST file. The tool offers to convert unlimited OST file to PST, EML, Office 365, MBOX, MSG, EMLX, HTML, ICS, and vCard file.

* The trial edition of the OST Converter tool allowed us to save the first 25 items per folder from the OST file.
OST mailbox conversion

Key Features of Best OST to PST Converter Software

OST Converter Tool




  • One tool for Convert Outlook OST, PST & NST file
  • Convert Imap OST to PST file
  • Quick to load any-size of OST file and recover OST mailbox data for a quick preview
  • Convert OST to PST, Office 365, MBOX, EML, EMLX, MSG, HTML, VCF, and ICS file.
  • Option to split OST file to PST smaller to avoid large file corruption.
  • Convert encrypted OST file to PST Outlook.
  • Preserve OST email properties- To, From, Subject, CC, BCC, etc.
  • Email Filter- Convert OST emails from any specific date by applying an email filter.
  • Naming Convention- Set email file names as per your convenience from a set of predefined naming convention.
  • Import OST to Office 365 - Supports to import OST files to Office 365 directly.
  • Support to convert Outlook OST 2019, 2016, 2013, 2010, 2007, and 2003 files.

Free Live Demo: Download free OST to PST Converter demo version and save 25 items from per folder of OST file.

Award Achievements

cNet Editior Choice Award

cNet Editior Choice Award Award


Rising Start Award

Rising Start Award

Software Suggest Award for eSoftTools OST to PST

Software Suggest 2020 Award

ost to pst converter offer

Special Offer-

Get EML to Office 365 Migrator toolkit free-of-cost with purchases of any license of eSotTools OST to PST Converter Tool.

Why we need to Convert OST to PST file

Reasons to consider for OST Conversion

There are several reasons to consider for OST conversion to PST. These are below some of the top reasons for convert OST to PST file-

  • Exchange Server Crashes or Down
  • Exchange Server goes into maintenance
  • Switching current job to another and need to transfer emails from OST file to PST
  • Need to move emails from one computer to another computer
  • MS Outlook corruption
  • When MS Outlook produces any-type of error message during opening the OST file.
The Best Solution is here

convert ost to pst tool

Key Features of OST to PST Converter Software

convert ost to pst file

Follow easy steps to Convert OST to PST file

The OST to PST Converter tool supports orphan, IMAP, and Exchange Server Offline storage files. To convert OST file in minimal steps, follow these below steps-

  • Download OST to PST Converter and install on Windows OS platform
  • Scan any-size of OST file
  • Check the preview of OST email messages and other items.
  • Click on the 'Convert' button and convert OST to PST file, MBOX, EML, EMLX, MSG, HTML, ICS, and VCF files.
  • Click on the 'Convert to Office 365' button to directly import OST to Office 365 account.
preserve ost folder hierarchy

Retain Original Folder Structure of OST file

The OST to PST Converter has enhanced features to keep maintain the original folder structure of the OST file to PST file during the conversion phase. After the conversion from OST file to PST, the user will see the exact folder structure without any changes. The tool also preserved every email metadata structure such as- To, From, Subject, Date, Inline images, embedded items, styles, hyperlinks, and attachment data.

Software for OST to PST Converter never made any single byte of changes on the internal structure of folders and its metadata.

convert ost to vcard

Convert OST Contacts to vCard VCF

The OST PST Converter tool has the option to convert OST Contacts to vCard individually. Users can convert OST Address book items to VCF files for transferring contacts to VCF supported email clients and devices. The OST Contacts to vCard tool, export all fields of contacts such as- First Name, Last Name, Phone, Office Address, Home Address, Email Addresses, etc.

convert ost to ics

Convert OST Calendar to ICS file

The OST to PST Convert tool also compatible with OST Calendar to ICS conversion. All fields (Start date, End date, Summary, Description, etc) of calendar items are successfully converted into ICS files without any losses. Users can convert OST Contacts to ICS files in batch and save precious time.

The ICS file is the extension of calendar items and the ICS files easy to open by MS Outlook, Gmail, Yahoo, Zimbra, Yandex, Windows Live Mail, SeaMonkey, and many others.

ost email filtering

Advance Date Range Filter for OST Emails

The OST email conversion by date range is the enhanced feature of this software. The OST Converter tool facilitates users to convert emails from OST file by specifying the date range and convert OST to PST file. This feature is a time saver for our users to save only required emails from OST file to PST.

ost email preview

Check OST email Preview before Conversion for FREE

The software for OST to PST Converter has an inbuilt panel to display the OST email preview for our users to check the OST file recovery result and develop the confidence that what they can convert. The users can preview OST email messages, Contacts, Calendar, Notes, Tasks, Journals, etc.

support all windows platform

Supported OST Version & Windows OS

This OST file converter tool is designed by the latest algorithm which helps to scan the OST file within 3-5 seconds and extract OST emails, folders, and subfolders. The software for OST to PST Converter supports following edition of OST and Windows OS-

  • Supports to convert Outlook OST, NST, and PST file
  • Supports to convert OST 2019, 2016, 2013, 2010, 2007, 2003 and other below versions
  • Windows OS- Win 10, Win 8.1, Win 8, Win 7, Win Server, and all other versions of Windows.
  • The software easy to operate on 32-bit and 64-bit of the computer.

Download Free OST to PST Software

Download free tool for OST to PST Converter and save OST emails without any loss

* The Demo Limitation: The demo version of the OST Converter tool is allowed to save the first 25 items per folder.

Software Specification

Trial Limitations

The trail version of software converts 25 items per folder from OST file to PST file.

Software Info


Version Support
MS Outlook 2019, 2016, 2013 & lower versions.

Single User, Corporate, Technician, & Enterprise

Language Supported
English, German, Italian, French, Spanish

System Requirements

Intel® Pentium Class

Operating System
Windows 10, 8.1, 8, 7

Hard Disk Space
50 MB of free hard disk space

Minimum 512 MB is required

Software Delivery


Delivery by E-mail

Supported Editions

Win 10 & All Below Windows Versions

How to Convert OST to PST?

Download OST to PST Free version of the software and follow some steps to convert entire OST mailbox to PST file as well as in various other formats.

Frequently Asked Questions (FAQ)

Convert OST to PST file by taking a few simple steps as mentioned below-
  • Download OST to PST Converter Software and install it on the computer by following on-screen installation instructions.
  • Click on 'Select OST' button from tool to add your OST file (User can also select PST or NST file for conversion)
  • Within a few seconds, the software for the OST converter displays all the folders and subfolders of the OST file in a tree hierarchy.
  • Check the preview of recovered OST items
  • Click on the 'Save OST' button for conversion into PST, EML, EMLX, HTML, MBOX, VCF, ICS, and HTML file.
  • For OST to Office 365 migration, the user can click on the 'Export to Office 365' button from the toolbar.
  • Select the saving location for the resultant file.
  • Click on the final 'Convert' button and wait for some time to finish the conversion process.

Convert OST to PST

Yes… The software to Convert OST to PST 100% maintains the real folder structure after the conversion. The tool also preserved the email messages meta properties as they are stored in the original OST file.
With the Demo version of the software, users can save/ convert OST emails up to 25 items per folder. Larger OST files scanning and previewing are permitted with the Demo version software. To convert all the OST items to PST file, you would need to obtain a license key by purchasing it.
This tool provides 9+ conversion formats for OST files. These are – Convert OST into PST, Office 365, MBOX, EML, MSG, EMLX, HTML, ICS, VCF, and others.

For import PST file in Outlook, there are 2-methods.

  1. Open PST file through MS Outlook
  2. Import PST file in Outlook through Import/Export option

Open PST file through MS Outlook

  • Open your MS Outlook and go to 'File' Menu
  • Click on 'Open and Export' option from the drop-down
  • Choose 'Open Outlook Data File' and click on it.
  • Browse the location of PST file and select
  • MS Outlook synchronizes the PST file and adds it for view

Import PST file in Outlook through Import/Export option

  • Open your MS Outlook and go to 'File' Menu
  • Click on 'Open and Export' option from the drop-down
  • Click on 'Import/Export' option
  • Select 'Import from another program or file' option and click on Next button
  • Select 'Outlook Data File (.pst)' and click on the Next button.
  • The Next window asks you for PST file location. So click on the 'Browse' button and select the PST file from the hard drive. And Click on the Next button.
  • Select the checkbox 'Include subfolders' and click on the Finish button
  • Now MS Outlook starts reading of selected PST file and import into existing Outlook profile mailbox.

With the OST to PST Converter tool, this task is pretty simple. This software has an 'Email Filter' option to convert OST emails from any specific date range.

This option is available on the Conversion Wizard of the software. Choose the date range (From & To) and convert filtered emails from OST to PST file.

If you have any problem during or after OST file conversion, you can contact us by email on or connect with us via live chat.

Yes… We have a complete help section for OST file conversion.

Visit How it works page here-

Youtube video link-

Client Most Valuable Review's

(Rated 5 Star)
I have done huge research for finding the best tool for OST to PST conversion on the internet. One day, I got this SysInspire OST to PST converter software. After using this tool, I got amazing results for OST file conversion. This is the advanced solution that provides the option to convert OST files into more than 15+ file formats and supports converting OST files of all versions of MS Outlook. I have converted my OST which is around 12GB this tool and this tool converted my files in a very short time. Thanks.
[ Anna marie ]  [ Belgium ]
(Rated 5 Star)
I am very glad by using eSoftTools OST to PST Converter Software. Its working process is too friendly which helps me a lot to make conversions of my OST files simply. It has offered me a lot of features that assits me a lot for makeing quick conversions very easily. Its free demo version is also good for knowing the ability of the software before purchase. I only recommended you use eSoftTools OST to PST Converter software to export OST files to PST.
[ Bethany McCorkindale ]  [ Canada ]
(Rated 5 Star)
OST to PST converter software is the solution that I have used for quick OST file conversion. This is the software that provides all the functions that users want for OST file conversion. After using this tool, I got the best conversion results and i have converted more than 50 OST files in a single process file using this single software. This tool is very powerful and performs the conversion without showing any problem.
[ Mary Wright ]  [ Finland ]
(Rated 5 Star)
I have a very good experience with this tool, and it is very useful for those people who want to recover data from corrupted or orphaned OST files. It recovers accidentally deleted emails from all types of OST files without losing a single bit of information easily. By applying simple clicks steps this tool has converted my Outlook OST files to multiple file types. Thanks, eSoftTools.
[ Bonnie Wang ]  [ Green Land ]