Offline OST to PST converter

OST to PST Converter Software

Software Rating (Average Rating 4.9 Based on 1283 Reviews)

All-in-one OST file converter tool for converting emails, contacts, calendars, tasks, attachments, and other items from an OST to PST file format. Microsoft MVP has validated this Offline OST to PST converter and marked it as best software.

  • Convert OST File to PST and EML, MSG, NSF, EML, EMLX, MBOX
  • Export in HTML, PDF, CSV, vCard, ICS, TXT, MHT, DOCX, DOC
  • Convert Offline OST Files to PST With Attachments and Contacts
  • No File Size Limitation: Convert Large Size OST File to PST Format
  • Provides Option to Break The Size of Resultant Outlook PST File
  • Outlook Installation and Exchange Profile Not Required
  • Download OST to PST Converter and Install on Windows 11, 10, 8

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software step

Bulk Convert OST Files to PST Format

Using the software panel, you can add multiple OST files at once and perform bulk converter OST to PST format. After that, preview the entire data set in the software preview panel and then select the necessary files or convert all OST files to PST format.

Instruction to export email from OST to PST

  • Step-1: Download OST to PST Converter and Install
  • Step-2: Launch The Tool and Browse All OST Files
  • Step-3: Preview Complete Data in 7+ Preview Modes
  • Step-4: Select PST Radio Button and Convert OST Files
free ost to pst converter

OST Converter

Apply Advanced Settings

The software provides some advanced options. You can use them to convert only the necessary data from an OST file. Simply use this OST to PST converter to get started.

Advanced Features:

  • Split Option: Add any size OST file for conversion and split the output PST file based on the required file size.
  • Date Range Option: Check the Data Range box, then enter a start and end date to include only selected emails in the OST to PST conversion process.
  • Categories: Use the check and uncheck boxes to export specific components such as emails, contacts, calendars, Tasks, Journals, and Notes from OST to PST file format.


Offline OST to PST Converter Tool

Export Offline OST to PST Format

Offline OST files can be converted using the OST to PST converter software. It ensures that all data is converted to a healthy PST file format. This feature is available in the free demo version software.

Bulk Convert OST to PST

You can convert multiple OST files to PST format by browsing multiple OST files into the software panel. The conversion process is completed quickly by the tool. By converting multiple OST files to PST format, it will save your time.

Multiple Export Options for Emails

OST converter software offers a variety of export options. That is, you use a single tool to convert your OST files to PST, EML, MSG, NSF, EMLX, and MBOX file formats.

Multiple Document Export Options

Use the same OST file converter tool to export the entire contents of an OST file into several document formats HTML, PDF, CSV, vCard, ICS, TXT, MHT, DOCX, and DOC.

Convert Orphaned OST to PST File

The software allows you to access an OST file even if you do not have an Exchange/IMAP profile. It can convert orphaned OST files to PST format with all associated attributes.

Convert OST to PST without Outlook

Don't worry if Microsoft Outlook isn't installed on your system. Even without Outlook, the offline OST to PST converter software can export all data from OST to PST file format.

Browse or Search OST File

OST to PST converter allows you to either add an OST file or search for an OST file on your hard drive. You can select any option that meets your needs. You can test this option by downloading the free demo version.

Preview OST File Items

Following the addition of an OST file, the software for OST to PST will allow you to preview OST file items in a variety of modes. Choose and view data in Normal Mail View, Hex, Properties, Message Header, MIME, HTML, RTF, and Attachments.

Exchange/IMAP Environment Not Required

The OST to PST converter software is a standalone application. The conversion process does not necessitate the use of an Exchange Server or an IMAP account environment.

All Windows OS Compatibility

The OST converter tool is compatible with the most recent Microsoft Windows OS 11 and all previous versions. Simply download OST to PST converter and install it on any Windows operating system.

Software Working

Steps to Convert Orphaned OST to PST Format
software screen
Browse OST file
Preview OST to PST
convert ost to pst offline


Free Download OST to PST Converter Software

Software Download

Size: 85 MB

Version: 9.1

MD5: a2d1a6dc70cd2f380ae917029efef202

Trial Limitations

The free OST to PST converter demo version allows you to export only 25 items per folder. Purchase the full version of OST converter for complete data conversion.

System Specifications

Hard Disk Space
100 MB of free hard disk space

Minimum 4 GB RAM

Intel® Core™ 2 Duo CPU E4600 @ 2.40GHz 2.39GHz Processor


  • Microsoft .NET framework 4.5 or above should be installed.
  • If you are using Windows 11, 10, 8, 7, then launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – Windows OS 11 (64 bit), 10, 8, 7 (32 bit or 64 bit) & Windows Server 2019, 2016, 2012 R2, 2008

Electronic Delivery

The delivery of Offline OST to PST converter is automatic. After your payment is confirmed, you will receive an email with a link to download the product and the activation key.

License Comparison

OST to PST Converter - Free & Full Version


Free Demo

Full Version

Add OST File

Search OST File from System

Preview OST File Data

Apply Date Filter

Apply Category Selection

Convert Orphaned OST to PST

25 Items/Folder

Convert Offline OST to PST

25 Items/Folder

Convert Corrupt & Inaccessible OST File

25 Items/Folder

Convert OST File without Outlook & Exchange Server

25 Items/Folder

Frequently Asked Questions

Offline OST to PST Converter Software

4 Steps to Use OST to PST Converter Tool:

  • Step1: - Free Download OST to PST Converter Software and Add OST File.
  • Step2: - After Adding OST File, Select Emails and Click on Export.
  • Step3: - 15 Options to Export OST File with Complete Data Easily
  • Step4: - Select PST and Brwose Location and Convert Offline OST to PST

No, users enable to convert OST files into PST of any size. It does not impose any limitation on the size of OST files.

OST to PST converter software will permit to add a single OST file at a time. Even, users unable to perform the exporting of Offline OST files in bulk. Moreover, a user capable to add OST files separately and then, export all of them together.

No, it is a standalone wizard; you can use it to convert OST to PST without Outlook installation.

Clients Reviews

Offline OST to PST Converter Software