Last updated on June 21st, 2024 at 02:22 am

Overview of Best OST File Converters

Selecting the best tool for OST to PST Converter from similar software brands can be daunting, often confusing users about which is best for their conversion needs. This article will discuss the top five rated OST to PST converters for Windows PCs. This guide will help users choose the best OST to PST converter software, ensuring they can efficiently convert small and large OST files to PST files. Read on to find the best software for converting OST to PST files.

Why Need to Convert OST files to PST

Converting OST (Offline Storage Table) files to PST (Personal Storage Table) files is a common requirement for various Outlook users. Here are several reasons involved when users think the OST conversion is necessary:

Data Accessibility: OST files mean the OST mailbox is always tied to specific Outlook profiles and are accessible through the original Outlook profile account that was created with them. If the Outlook profile is corrupted, or deleted, or the account no longer exists, the OST files become inaccessible. Converting OST to PST allows users to access their data in any Outlook version.

Migration to a New Computer: Transferring OST files to a new computer can be problematic because the OST file is dependent on the original Outlook profile. Converting OST to PST simplifies accessing emails on any MS Outlook edition. PST files can be easily imported into Outlook on a new computer without compatibility issues.

When OST File Becomes Corrupted: OST files are very sensitive files and they become corrupted due to abrupt system shutdowns, network issues, or malware attacks. OST to PST Converter tools help retrieve emails, contacts, and calendar data from corrupted OST files.

Top 5 Software for OST File to PST Converter based Accuracy, Conversion Quality & Speed

This section explores 5 top-rated OST to PST converters for Windows computers. Users often need clarification on which software brand to choose, which tool will work with their OST files, and what to do if the selected software does not work. Here, we address all these doubts and present five performance-based tools for OST to PST conversion. Choose any of the below-mentioned OST to PST converter software brands and say goodbye to the headaches of OST file conversion.

1) eSoftTools OST to PST Conversion Software

eSoftTools OST to PST Converter Software is the most popular and #1 tool for recovering OST files. The tool can easily convert inaccessible or orphaned OST files and restore every email, contact, calendar, task, note, journal, etc., to a working PST file. It has an inbuilt clean user interface, that makes the conversion process straightforward even for non-technical users.

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OST to PST Converter

Spotlight Features of Software:

  • The software offers multiple conversion formats for OST files, such as converting OST files to PST, EML, MSG, HTML, MHTML, MBOX, Thunderbird, Zimbra, etc.
  • Multiple cloud options for OST files are available, such as OST to Office 365 migration, OST to Gmail migration, OST to IMAP, and OST to Yahoo Mail migration.
  • Completely convert OST file data- Emails, Attachments, Calendars, Contacts, Notes, Journals, Tasks, etc.
  • It supports batch OST file conversion to facilitate and save valuable time.
  • Email filtration is an additional feature that allows you to search and filter emails by date range.
  • The software has added the feature of splitting OST files into smaller PST files.
  • During OST to PST conversion, the software maintains data integrity and folder structures as present in the original file.
  • The software is easy to operate on all Windows OS including Win11 and below.

Official Product Details Link- eSoftTools OST to PST Converter

2) SysInspire Convert OST to PST Tool

Next on our list of top OST converters is the SysInspire OST to PST converter. This software is built with a powerful algorithm that can scan and load smaller to larger OST files in seconds and convert any OST file to PST. The software interface is unique and easy to understand, making OST file conversion more secure.

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SysInspire OST to PST Converter

Key Features of Software:

  • SysInspire OST Converter tool converts OST emails, contacts, calendars, and other data.
  • Multiple OST file conversion facility.
  • It provides an email preview before converting the OST file to PST.
  • Recover & convert orphaned OST files to PST.
  • Password-protected OST files can be easily recovered and converted.
  • PST file splitting from OST file applies to the software.
  • Convert OST emails with attachments in original formatting.
  • This tool comes as a free demo with limited OST to PST conversion.

Official Product Details Link- SysInspire OST to PST Converter

The free demo version of SysInspire OST to PST Converter can only convert the first 25 emails from OST files.

3) Enstella OST Converter

Enstella Systems is a leading company in data and email recovery and conversion. Their product, Enstella OST to PST Converter, is an excellent tool for Outlook users. It allows them to recover single or multiple OST files in one go and offers a preview of every email for user satisfaction. The software has no size limitation for OST files, giving users a reliable and efficient experience.

While using the software, users will have multiple functionalities for converting OST files into various formats and uploading OST to popular cloud platforms (Office365, Gmail, Yahoo Mail, and IMAP Server Account).

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Enstella OST Converter Software

Salient Features of Software:

  • It has a clear UI and requires 2-3 clicks to finalize OST conversion.
  • The Super-fast inbuilt engine reads OST files and displays email, attachments, calendars, and contact data.
  • The ability to load multiple OST files and merge them into a single PST file is available.
  • The software includes a file naming convention for OST files in formats like EML, MSG, HTML, etc.
  • Option to save OST emails by date range.
  • Test before buying license concept designed this software as a more unique and trustworthy application for Outlook users.

Official Product Details Link- Enstella OST to PST Converter

This is a Windows application and requires to install and use on any version of Windows PC.

4) PassFIXER for OST Converter

PassFIXER for OST Converter ranks 4th among the top five OST to PST converter software. This tool effectively resolves OST file errors, orphans, and inaccessible files, ensuring 100% safety for users. It allows hassle-free export of OST files from any Outlook version. The software includes all functionalities of other brands and offers additional features such as selective data export, single folder conversion, and separate saving of contacts and calendars.

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PassFIXER OST Converter

Highlighted Features of PassFIXER OST Converter

  • Single and multiple OST file conversion is permissible.
  • Selective folder conversion is applicable.
  • There are no limits on OST file size.
  • Convert OST contacts to vCard, PST, and MSG files.
  • Convert OST calendars to ICS, PST, and MSG files.
  • No alteration on the original OST file during scanning and conversion.
  • The Software is compatible with all Windows OS including Win11.

Official Product Details Link- PassFIXER for OST Converter

5) JSLTools for OST Converter

JSLTools for OST Converter ranks fifth in the top OST to PST converter software list. This software scans OST files in seconds and accurately replicates the folder structure from the original OST file. It features an integrated preview panel where users can easily view emails, contacts, calendars, and other items.

This OST Converter also supports batch conversion, allowing multiple files to be processed simultaneously. It also ensures data integrity by maintaining all items’ original formatting and metadata. Furthermore, the tool is compatible with various versions of Outlook, making it a versatile choice for users.

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JSLTools for OST Converter

Feature of JSLTools for OST Converter

  • Fastly scan and load OST emails, contacts, calendars, and other data.
  • Maintains email header information (To, Cc, Bcc, Subject, Date-time, etc).
  • Email attachments are 100% secured in conversion from OST file to PST.
  • Multiple naming convention features added to the software for easier accessibility.
  • Supports all versions of MS Outlook OST files, including Outlook 2021.
  • Easy to install and convert OST files on Windows 11 and below versions.

Official Product Details Link- JSLTools for OST Converter


This article covers top converter tools for OST files to PST and other formats. In the first position, eSoftTools OST to PST Converter Tool is a more secure and fast tool for OST to PST conversion. All other software tools are outlined: SysInspire OST for PST Converter, Enstella OST for PST Converter, PassFIXER for OST Converter, and JSLTools for OST Converter Software. All these mentioned tools are top performers that meet various user needs. These software are designed to handle smaller to larger OST file recovery tasks, maintain data integrity, and support multiple conversion features. Choose the right software from the top 5 super software and complete the task.

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