Top 10 OST to PST Converter Tools – Export OST to PST Using Free Online Software

In this blog, you will get to know why we should use OST to PST converters, what major role they play in our business and personal life, how these OST converters make our work easy and smooth, and how much these OST migrating tools help people – their hours of work get done in minutes without any headache. 

Information about free version and paid version of OST to PST exporters is also provided, and to know more about OST software, read and understand this blog – it is going to be very beneficial for you.

The ClipsTrust team has researched some of the top 10 best OST to PST migrators that are highly reliable and easy to use. Both free and paid versions of these tools are available. Their own team also uses these OST to PST exporter tools. The top 10 list of OST to PST Tools  is mentioned below.

SysTools OST to PST Converter

SysTools OST to PST Converter is a Windows-based tool to convert OST files to PST and other formats like EML, PDF, or MBOX—even if the OST file is corrupted, orphaned, or encrypted. It works without requiring Outlook or Exchange, and is used for email recovery, migration, and backup..

Developed by SysTools Software Private Limited.

Expert ratings: 9/10 (TechPreview), 4.8/5 (My Techlogy)

Features	Descriptions
Pricing	Paid; Mid-range
Supported Formats	PST, MBOX, MSG, EML, PDF
Conversion Speed	High-Speed
File Size Limit	No limit
Ease to Use	Intuitive GUI
Outlook & OS Compatibility	All Outlook & Windows version
Corruption Recovery	Advanced Scanning
Preview & Selective Export	Yes; Item level export
Cloud Export	Office 365, Exchange
Free Trial	Demo; limited items

Positive Aspects

• Multi-format support
• Batch Conversion Capability
• No file size limitations
• Expert-verified quality

Negative Aspects

• Windows-only Compatibility
• Requires payment for full features
• Complex interface
• Outlook installation required

Watch: OST to PST Converter Overview by SysTools

Stellar Converter for OST

Stellar Converter for OST is a tool that converts inaccessible OST to PST format, allowing you to recover emails, contacts, and other mailbox data. This tool becomes useful when Outlook is unable to open OST files due to profile or server issues. Many users rely on this tool, and it is considered very useful.

Developed by Stellar Data Recovery.
Expert ratings: 10/10 (ExpertExchange), 4.6/5 (Winsides)

Features	Descriptions
Pricing	Tiered; Premium
Supported Formats	PST, MSG, EML, RTF, PDF
Conversion Speed	Fast Batch
File Size Limit	Up to 50GB smoothly
Ease to Use	Very user-friendly
Outlook & OS Compatibility	Outlook 2007–2021; Win 8–11
Corruption Recovery	Deep repair engine
Preview & Selective Export	Yes; multi-filter preview
Cloud Export	Office 365, Live Exchange
Free Trial	Free demo; 20 items/folder

Positive Aspects

• Large file/folders handling
• 100% data integrity
• Multiple output formats
• Deleted item recovery

Negative Aspects

• Demo version limitations
• Windows OS restriction
• Outlook installation requirements
• Customer support issues

For more information,

Kernel OST to PST Converter

Kernel OST to PST Converter is a Windows tool that converts corrupted or inaccessible OST files into PST format, allowing you to recover and open your emails, contacts, calendars, and other data. This tool is very effective, supports large files, and users are generally satisfied with it. When OST files fail to open, it helps recover Outlook data from them.

Developed by Kernel Data Recovery.
Expert ratings: Highly rated by Microsoft Professionals

Features	Descriptions
Pricing	Starts at $49
Supported Formats	PST, MSG, EML, MBOX, PDF
Conversion Speed	Quick bulk
File Size Limit	No restriction
Ease to Use	Simple interface
Outlook & OS Compatibility	All Outlook & Windows versions
Corruption Recovery	Robust repair
Preview & Selective Export	Yes; single-item export
Cloud Export	Office 365, Exchange
Free Trial	25 Items/folders

Positive Aspects

• No file size restrictions
• Support multiple format
• Maintains folder hierarchy
• Cloud migration support

Negative Aspects

• Poor user interface
• Inconsistent performance
• Limited demo version
• Navigation complexities

For more information,

DataNumen OST to PST Converter

DataNumen OST to PST Converter is a software tool that converts OST files to PST format and recovers corrupted or stranded OST files by converting them into PST files, which can then be easily opened in Microsoft Outlook. Just like OST to PST exporters, MBOX file conversion is also crucial. You can use the best MBOX converter tools to easily handle different mailbox formats.

Developer – DataNumen.
Expert Ratings: 100% satisfaction guarantee, 20+ years experience

Features	Descriptions
Pricing	One-time license
Supported Formats	PST only
Conversion Speed	Very fast
File Size Limit	Supports huge files (16PB)
Ease to Use	Minimal learning
Outlook & OS Compatibility	Outlook 97+; Office 365
Corruption Recovery	Sector-level repair
Preview & Selective Export	No preview
Cloud Export	None
Free Trial	25 items per folder

Positive Aspects

• Massive file capacity
• Support of password protection
• Batch processing
• 20+ years of experience

Negative Aspects

• Limited format options
• Requires Outlook shutdown
• Complex setup process
• Higher pricing

For more information,

MailsDaddy OST to PST Converter

MailsDaddy OST to PST Converter is a software tool used with Outlook that recovers corrupted or damaged OST files, converts them into a readable format, and allows users to access their data.

Developed by MailsDaddy Software.
Expert ratings: 4.5/5 average user rating

Features	Descriptions
Pricing	Affordable tiers
Supported Formats	PST, MSG, EML, MBOX, HTML
Conversion Speed	Fast
File Size Limit	No limit
Ease to Use	Straightforward
Outlook & OS Compatibility	Outlook 2003-2019; Win 7-10
Corruption Recovery	Basic recovery
Preview & Selective Export	Yes; preview pane
Cloud Export	Office 365, Exchange
Free Trial	Demo; 20 emails/mailbox

Positive Aspects

• No Outlook requirement
• Handle Big files
• Multiple export formats
• Ergonomic Interface

Negative Aspects

• Only support Windows
• Limited demo conversion
• Issues in activation process
• Single-use licensing

For more information,

Regain OST to PST Converter

Regain OST to PST Converter is a software tool that recovers emails, contacts, and other mailbox data from OST files and converts them into PST format so they can be easily accessed in Microsoft Outlook. It has many features and is a highly effective tool for users. Email marketing works effectively with the support of OST to PST converters, which play a major role in ensuring smooth functionality for successful email marketing campaigns.

Developed by Regain Software.
Expert ratings: Recommended by business professionals

Features	Descriptions
Pricing	Starts at $39
Supported Formats	PST, MSG, EML, MBOX, PDF
Conversion Speed	Fast batch
File Size Limit	Unlimited
Ease to Use	Easy GUI
Outlook & OS Compatibility	All Outlook & Windows versions
Corruption Recovery	Good repair tools
Preview & Selective Export	Yes; folder-level preview
Cloud Export	Office 365, Exchange
Free Trial	Free trials available

Positive Aspects

• Affordable Pricing
• Bulk conversion support
• Corrupted file handling
• Multi-format export

Negative Aspects

• Poor customer service
• Software reliability issues
• Limited technical support
• Ineffective performance

For more information,

Aid4Mail OST to PST Converter

Aid4Mail OST to PST Converter software tool enables users to access and recover their data from offline or damaged OST files. It is very easy to use and is great for many users, making their work much easier.

Developed by Aid4Mail.
Expert ratings: Used by Fortune 500 Companies and Government Agencies

Features	Descriptions
Pricing	Subscription+
Supported Formats	PST, EML, MBOX, MSG
Conversion Speed	Moderate
File Size Limit	No hard limit
Ease to Use	Technical UI
Outlook & OS Compatibility	Outlook & multi-platforms
Corruption Recovery	Recover & repair
Preview & Selective Export	Yes; Selective filters
Cloud Export	None+
Free Trial	14-days trial

Positive Aspects

• Professional-grade quality
• Secure data guarantee
• Advanced recovery features
• Multiple licensing option

Negative Aspects

• Higher cost
• Swiss-based support
• Difficult feature set
• Limited trial option

VSPL OST to PST Converter

VSPL OST to PST Converter tool is very easy to use, and its process is simple. It converts OST files into PST format so that users can restore their data without any loss and access it easily in Microsoft Outlook.

Developed by Vartika Software Private Limited.
Expert ratings: Highly Rated for consistency and power

Features	Descriptions
Pricing	Per-user license
Supported Formats	PST, MSG, EML
Conversion Speed	Quick batch
File Size Limit	No mention
Ease to Use	Straightforward
Outlook & OS Compatibility	Outlook 2003-2016; win 7-10
Corruption Recovery	Basic recovery
Preview & Selective Export	Yes; Item-level selection
Cloud Export	None
Free Trial	Trial; limited exports

Positive Aspects

• Clear layout
• Optimized performance
• Migration to several cloud environment
• Award-winning Software

Negative Aspects

• Limited brand recognition
• Newer market presence
• Limited platforms
• Transparent pricing

SysInfo OST to PST Converter

SysInfo OST to PST Converter is very popular and widely used. It converts your data from OST to PST very safely, efficiently, and without any data loss. It is also very user-friendly and easy to use.

Developed by SysInfo Tools.
Expert ratings: Award-winning Software

Features	Descriptions
Pricing	One-time fee
Supported Formats	PST, MSG, EML, PDF, HTML
Conversion Speed	Fast
File Size Limit	No limit
Ease to Use	Step-by-step wizard
Outlook & OS Compatibility	Outlook 2007-2019; win XP-10
Corruption Recovery	Standard repair
Preview & Selective Export	Yes; multi-filter export
Cloud Export	None
Free Trial	50 items per folder

Positive Aspects

• 30+ format supports
• Advanced filtering options
• Direct Cloud Migration
• 24/7 Technical Support

Negative Aspects

• Monthly pricing is very high
• Free version is limited
• Windows dependency
• Complex features set

Advik OST to PST Converter

Advik OST to PST Converter offers a very simple and easy way for you to restore your data from corrupted OST files into PST format without any data loss, and it is very safe and easy to use. Most of the users use this converter and they are very satisfied with this software. Advik software is very useful for many users and makes their work easier and more accurate.

Developer – Advik Software
Expert Ratings – Positive user Feedback for reliability

Features	Descriptions
Pricing	Free & paid versions
Supported Formats	PST, MSG, EML, MBOX, PDF
Conversion Speed	Fast
File Size Limit	No limit
Ease to Use	Clean UI
Outlook & OS Compatibility	Outlook 2003-2019; win 7-10
Corruption Recovery	Basic repair
Preview & Selective Export	Yes; file/folder selection
Cloud Export	None
Free Trial	25 emails per folder

Positive Aspects

• Keeps directory tree & metadata intact
• Batch conversion
• Recovers from corrupt and secure OST formats
• In offline no outlook is required

Negative Aspects

• Supports only windows
• Free trial is limited
• Online & we-based option is not available
• Limited speed on heavy OST files

NOTE: Many businesses, including the eCommerce industry, rely on secure email data management. If you want to explore the growth of eCommerce through technology support, check out this eCommerce software guide. Reliable OST to PST tools also play a significant role in ensuring smooth communication across various sectors.

What is an OST file? 

An OST file in Microsoft Outlook is a local copy of your Mailbox data, which includes emails, calendar entries, contacts, and tasks. It is used whenever you have an Exchange account and have enabled the cached Exchange mode or if you are working offline. 

The OST allows users to access their email even when they are not connected to the Exchange server and automatically synchronizes changes whenever the connection is restored. 

When is OST File Conversion Required?

OST file conversion is required whenever someone needs to access their email data, contacts & calendars, even when the Exchange server is unavailable or for data backup, migration & archiving.  

When working professionally with data conversion tools OST to PST, it’s important to use reliable and trusted software. You can explore some top BLR software tools that support and help ensure smooth functioning and a secure workflow.

Here’s a more detailed reason why OST conversion is required: 

• If your Exchange server is down due to an unexpected crash, you cannot access your email data through the OST file. 
• However, one can convert their OST files to access their email data locally until the server is back online. 
• If your OST File has become large, you can archive older emails to PST files. 
• OST file conversion will help you manage storage space & improve Outlook’s performance.

NOTE: Along with OST to PST tools, EML converter tools also play a crucial role in managing different email formats. Top EML converter software helps in smooth functioning of email migration process with the different platforms.

What is the difference between an OST and PST converter? 

 How to Choose the Best OST Converter Tool Online?

Choosing the right OST converter to PST depends entirely on the user’s specific needs and budget. These converter tools have helped countless users by making their work easier and more efficient. Whether it’s recovering lost data or accessing emails from damaged OST files, these tools simplify the process significantly.

Before selecting any converter tool, users (including us) usually consider key factors like:

• Personal or professional needs
• Security features provided by the tool
• Pricing and overall value

Here’s a brief explanation of the Top 10 OST to PST forum, selected based on their performance in terms of security, pricing, and how well they meet the different needs of users.

Main selection factors overview of OST to PST converters wizards 

Tool Comparison of OST migrators for Tech Users ( IT Professionals, System Administrators)

Security and Data Integrity Comparison Table for conversion of OST to PST 

Free Trial vs Paid version: OST Converter Tools Comparison 

Here are the comparison table that highlights the OST to PST Converter free and Paid tools – 

NOTE: Having a good backup software is very important when performing OST to PST migration to avoid any data loss. You can explore some of the best backup software for Windows PC here to keep your data safe during the conversion process.

Step-by-Step Guide: How to Convert OST to PST outlook

Here are some steps for converting OST files into PST formats by manual method, using OST converter software version and when to use professional tools vs manual methods are mentioned below – 

1. Manual Method for migration of OST to PST files

Here are the following steps of Manual Method mentioned below – 

Step1 – Start outlook

Open microsoft outlook and verify you’re using the profile linked with the OST file you want to active 

Step2 – Access the Import and Export Wizard

Go to the “file” menu, select “Open & export,” and click on “Import/Export”

Step3 –  Pick the export option

Within the import and export wizard, pick “export to a file” and press “next”

Step4– Choose the PST format – 

Select “outlook data file (.pst) as the export format, then click “Next”

Step5 – Choose mailbox – 

Pick the mailbox or folder from your OST file that you want to export. You can export the entire account or just certain folders 

Step6 – Set destination path 

Choose the folder on your computer to save the new PST File and configure options like exporting subfolders and managing duplicate items 

Step7 – Finish exporting

Select “finish” to start exporting. A prompt may appear to set a password for the PST file

Pros and Cons of Manual Method conversion OST to PST files  –

2. Using OST file Converter Software

Here are some steps by using OST Converter software:

Step1 Fetch and Configure:

Acquire the OST converter to PST program from a reliable website. Follow the On-screen Prompts to configure the software on your Windows PC.

Step2  Begin using the software:

Open the OST Converter downloaded software 

Step3  Attach the OST file:

locate and select the OST file for conversion. Some software allows you to add multiple files or complete folders

Step4 Examine and select:

Once the OST file is loaded, the software will display the contents of the OST file, you can review emails, contacts, calendars, etc and select the folders or items you wish to export to the PST File.

Step5  Specify PST as the export file type:

Set “PST” as the output format for the converted data.

Step6  Define save directory:

Pick the destination location on your computer to save the created PST file

Step7 Execute the conversion:

Click the initiate conversion. The tool will now convert your OST data to PST format

Step8 Close out the conversion:

After the conversion completes, the PST file will available to access in outlook 

 When to Use Professional Tools vs Manual Methods

Here are some reasons or factors on which we use the methods separately in more effective manners: 

NOTE: Many top Indian software companies use the best OST to PST conversion tools. To learn about these companies, check out this list of top software companies in India. These companies carry out their OST to PST migration process in a smooth and secure way.

OST Converter for Windows, Mac, and Cloud 

If you are looking for an OST to PST converter for Windows, Mac, or cloud platforms, modern OST converter tools offer cross-platform support, allowing users to convert OST files regardless of their operating system.

 Many of these tools provide cloud migration features, enabling seamless transfer of mailbox data to services like Office 365 and Google Workspace. Some tools also offer mobile-friendly interfaces or apps.

Overview of Platform compatibility and features – 

What are the Common OST Conversion Errors & How to Fix Them

Converting OST files to PST format is not always easy. During the conversion process, you may encounter some errors and face various problems. However, there are solutions for all of these issues, and we can fix them. Top software developers also used these tools for betterment of their work Below are some points to read and understand how we can resolve these errors: 

Some common error messages for OST to PST file conversion – 

• File not recognized error
• Cannot Open OST file
• OST corruption detected messages 
• Synchronization failures error 

Troubleshooting Steps for exporting OST to PST files – 

• Run Inbox repair Tool
• Deleted and recreate OST 
• Scan for malware attacks 
• Repair using ScanOST.exe

When to seek expert help for migrating OST to PST formats – 

• Severe OST file Corruption
• Large-scale enterprise migrations
• Critical business data recovery 
• Complex technical requirements     

NOTE: Before using OST to PST migrator tools, it’s very important to ensure that your PC has all the essential software installed so that everything runs smoothly. From file management utilities to system security, having the right setup helps make the OST to PST migration process fast, smooth, and safe. For efficient OST to PST conversion, you need to have the best required software installed on your PC.

What People say’s about migrating OST to PST files – 

1. Dean Wells describes the OST to PST Converter as outstanding, especially when working with large OST files. He notes that the tool is easy to use and helped him recover data from a corrupt and damaged OST file. According to Wells, this is one of the better software options available for converting OST to PST. He adds that the overall conversion process is straightforward and completes within just a few minutes.

Source taken from –  https://www.esofttools.com/ost-to-pst-converter.html

1. John Marwa from the USA highly recommends the OST to PST Converter, praising its user-friendly interface and the excellent support team. He mentions that these features optimized the conversion workflow and hassle-free.

Source taken from – https://www.esofttools.com/ost-to-pst-converter.html

1. Flores from Turkey shares that they were surprised by how quick and easy email migration could be. They found using the software for OST to PST conversion to be very straightforward. Flores gives five stars to the BitRecover development team for creating such a useful offline tool.

Source taken from – https://www.bitrecover.com/ost-to-pst/

1. David Edwards expresses high satisfaction with the performance of the software, stating that it successfully converted his OST to PST without any hassle. He highlights that the tool is easy to use and does not call for any beforehand technical knowledge, making it open to users of all skill levels.

source taken from – https://www.shoviv.com/ost-to-pst-converter.html

1. The ClipsTrust team itself is using these exporters, and their experience with these tools has been very positive. They are very reliable and easy to use, which makes their work much easier. There’s no data loss at all. The ClipsTrust team is highly satisfied with these OST to PST exporters. Nowadays, OST to PST converters are even available for free download. OST converter tools have become extremely useful in today’s time.

NOTE: When working with OST converter software, it’s very crucial to keep your system protected from potential threats and obstacles. A reliable antivirus not only protects your email files from malware but also prevents data corruption during the OST to PST migration process. You should also consider exploring some of the top antivirus software for your PC to ensure data integrity and system security, which helps in completing the OST to PST export process smoothly.

Real Results: Success Stories from our Users about exporting of OST to PST files

Case study 1: Brandyhill.net Corporate Data Recovery 

Scenario:

“When brandyhill.net.Inc’s server failed, it was facing a lot of problems. Because of its failure, many employees were not able to access their important data and emails which were stored in OST file format. Due to this, the company had a great need for data recovery so that the business does not face any problems or get disturbed, and all operations continue to run smoothly.”

Solution:
Then the company used Stellar Converter for the OST tool, because of which their large and corrupted OST files were successfully converted into PST files. This tool helped them a lot and also solved export process failures which were not possible through manual methods.

Result:
Brandyhill.net recovered their emails and data and prevented financial loss. Due to this conversion process, data integrity was maintained, and the information which was previously inaccessible was now provided access to, because of which business continuity was maintained.

Case Study 2: Individual Professional Data migration 

Scenario:

“There was a business professional who had to migrate some old years’ worth of email data while changing companies, and he had an orphaned OST file in which some of his important work contacts, project communications, and calendar entries etc. were stored, which, while he was migrating the data, were not accessible through the original Exchange server.”

Solution:

Then that professional user used a good and reliable OST to PST converter tool that could handle orphaned files well and effectively. This server then successfully processed the OST data without any connectivity or Outlook profile.

Results:
After the conversion, the migration happened at the new location in which all the emails, contacts, and calendar entries were stored with complete metadata, due to which the professionals were able to smoothly continue their work and project history.

Case Study 3: Massive Migration of an Entertainment Corporation

Scenario:
“There was a company named Global Entertainment which had more than 80,000 users. It found 575,000 unsecured PST files in its North America operations, which contained over 500TB of data. These files had become a security risk. Now, the company had to remove all PST file formats and convert them to Outlook.”

Solution:
Then the company selected Quest’s PST Flight Deck. The enterprise managed it, and this server approach handled the difficult conversion and migration process very smoothly, taking care of bandwidth and including real-time monitoring.

Results:
500TB of data from 575,000 PST files was successfully processed for more than a thousand users. During the migration, the security risk was removed, and the chain of custody was maintained throughout the process. Goals were achieved, and data governance also improved.

NOTE: After converting OST to PST files, it’s very important to store your data safely and securely. The best cloud storage apps help you export your email data securely, keep it accessible, and allow you to back it up anytime.

FAQ’s 

Ques 1: What is the safest way to convert OST to PST?

The safest way to convert OST to PST is to use a reliable and professional OST to PST converter tool. It should ensure data integrity, maintain the original folder structure, and securely handle both corrupted and large OST files. Always choose a tool that meets your specific needs and handles the entire process efficiently.

Ques 2:  Can I recover emails from a corrupted OST file?

Ans: Yes, absolutely you can recover your emails from a corrupted OST file by using: 

• Microsoft Outlook’s built-in repair tool
• Converting OST to PST
• Importing OST into a new Outlook profile

Ques 3: Is there a free OST converter tool?

Ans: Yes, there are some free OST to PST converters also but they allow viewing only, for full conversion you need the paid tools to get full features. Free tools like kernel OST viewer or SysTools OST Viewer, etc. The reviews of SysTools also get very good.

Ques 4 How to convert OST to PST outlook?

Ans: Here are the steps to convert OST to PST are mentioned below: 

Step 1 – Open Outlook 

Step 2 – Open the File tab, go to Open & Export, and then Import/Export.

Step 3 – Click on Export to a file, and choose Outlook Data File (.pst).

Step 4 – Select the desired mailbox, then complete the export process

Ques 5 What are the hurdles in exporting OST to PST in Office 365?

Ans:  There are some hurdles or challenges while migrating OST to PST files such as corrupted files, orphaned OST files, large mailbox size, restricted Outlook export options, encryption issues, and there are many limitations in direct export tools also. 

Ques 6 What is the best OST to PST converter? 

Ans: The best OST to PST converter software which has very unique features, easy to use and reliable are:

• Stellar Converter for OST
• SysTools OST to PST
• Kernel for OST to PST
• Zook OST to PST 

The best software engineers use top OST to PST migrator tools, which are extremely useful for them and can turn hours of work into minutes.

Ques 7: How do I choose the right OST to PST exporter for my needs?

Ans:  To choose the right exporter of OST to PST file according to my need are there are certain factors like:

• File size support
• Abilities to handle damaged files 
• Export formats
• Easy to use 
• Speed and Compatibility 
• Test with free demo before purchasing 

Ques 8: Can I convert OST to PST for free?

Ans:  Yes, but there are some limitations. You can export OST to PST for free by using Outlook’s export features; this is done only when the OST file is linked to an active account. For damaged or corrupted OST files, most free OST converters allow only limited previews or partial conversion. For full features you need to purchase OST softwares.

Concluding thoughts – 

To conclude, in the following guide, we have mentioned the top 10 OST converter software that can help you seamlessly convert OST files without data corruption. The tools mentioned allow one to export data into multiple file formats as well as email clients like Mozilla Thunderbird, Outlook, etc. 

Before purchasing the premium version, one can try out the trial version to learn the software settings before making an informed decision. Many software programs allow one to convert at least 25 emails per folder free of cost. If you are content with the converter’s performance, you can simply buy it from their website. 

In real life these OST migrators help or we can say play a vital role in our organization and our work in better form and saves our crucial time

Priya Panchal

Hi, I’m Priya a passionate content writer with a knack for creating clear, engaging, and SEO-friendly content. Over the past few years, I’ve had the opportunity to write blog posts, website copy, product descriptions, and social media content for a wide range of industries. I take pride in my attention to detail, research-driven writing process, and ability to adapt my tone to suit different audiences. My goal is always to help brands tell their story in a way that connects and converts.