Top 5 OST to PST Converters You Can Rely On

Microsoft Outlook is one of the most widely used email clients, trusted by millions of individuals and businesses across the world. Outlook stores mailbox data in two types of files – OST (Offline Storage Table) and PST (Personal Storage Table). OST files are created when Outlook is connected with Exchange Server, while PST files are used to back up or move emails from one system to another.

The problem starts when OST files become inaccessible, corrupted, or when users want to move data from one Outlook profile to another. Since OST files cannot be opened directly in another Outlook account, the most reliable solution is to convert OST to PST. This ensures that all emails, contacts, calendars, attachments, and folders are safely migrated.

There are dozens of tools available to perform this task, but not all are equally reliable. To save you time, we’ve reviewed and shortlisted the Top 5 OST to PST Converters that provide safe, efficient, and user-friendly migration.

What to Check Before Choosing an OST to PST Converter?

Before investing in an OST to PST converter, it’s important to make sure the tool matches your needs. Here are a few key things to check:

• Data Safety: The tool should ensure that no emails, attachments, or contacts are lost during conversion.
• File Size Support: OST files can grow very large, so the software should handle oversized files without errors.
• Corruption Recovery: Look for a tool that can also repair or restore corrupted or damaged OST files.
• Export Options: Besides PST, having support for multiple formats and cloud migration makes the tool more versatile.
• Filters and Flexibility: Features like splitting PSTs, creating year-wise files, or exporting per user are very useful.
• Ease of Use: A simple interface saves time, especially for non-technical users.
• Expert Trust: Tried-and-tested tools with positive reviews provide extra assurance.

Among the top tools, BitRecover OST to PST Converter stands out because it covers almost all these points. It can handle unlimited OST files, repair corrupted or oversized data, and offers 39+ export options apart from PST. With advanced filters like language change, split PST, separate PST per user, and year-wise PST creation, it provides more flexibility than most competitors. Since it has been tested and recommended by experts, users can trust it for safe and reliable Outlook data conversion.

1. BitRecover OST to PST Converter

BitRecover offers one of the best OST to PST Converter is one of the most trusted solutions for Outlook users. It’s designed to handle all types of OST files — whether they are corrupted, orphaned, encrypted, or inaccessible. What makes this tool stand out is its ability to convert OST not only into PST but also into more than 39 other formats including MSG, EML, MBOX, PDF, and even cloud services like Office 365 and Gmail.

Key Features:

• Converts OST files to PST without needing Outlook or Exchange.
• Preserves folder hierarchy, email metadata, and attachments.
• Supports large OST files without any size limitation.
• Advanced filters to export data by date, subject, or sender.
• Batch conversion to process multiple OST files at once.
• Works on all Windows versions, including Windows 11.

Why Choose It?

BitRecover is ideal for users who want flexibility. If you don’t just want PST but also other formats or cloud migration, this tool gives you everything in one place.

2. SysTools OST to PST Converter

SysTools OST to PST Converter is another well-established name in the data recovery and migration field.It is widely used by IT administrators for large-scale email migrations. It offers a professional interface with advanced options that make it suitable for both individual users and enterprises.

Key Features:

• Converts offline OST files into Outlook PST format.
• Recovers deleted emails and restores mailbox items.
• Provides “split PST” option to manage large file sizes.
• Offers preview of mailbox items before conversion.
• Compatible with all Outlook versions including 2021 and Office 365.

Why Choose It?

If you need a reliable enterprise-level tool with powerful recovery features, SysTools is a safe choice. It may cost a bit more than others, but it’s worth it for large organizations.

3. RecoveryTools OST to PST Converter

RecoveryTools OST to PST Converter is known for its simplicity and speed. It allows users to convert OST files into multiple formats and works smoothly even if Outlook is not installed. The tool is lightweight, making it suitable for non-technical users who want quick results without a steep learning curve.

Key Features:

• Converts OST files to PST, MBOX, EML, MSG, and more.
• Preserves email formatting, metadata, and attachments.
• Supports orphaned and corrupted OST files.
• Provides selective export options using filters.
• Easy-to-use interface designed for beginners.

Why Choose It?

This tool is best for home users or small businesses that want a cost-effective and straightforward solution.

4. Corbett OST to PST Converter

Corbett OST to PST Converter is a modern migration tool that comes with advanced features. It allows users to not only convert OST files into PST but also directly migrate them to IMAP accounts such as Gmail, Yahoo, and Office 365. The software is designed with a user-friendly dashboard that makes navigation simple.

Key Features:

• Converts OST into PST and 20+ other file formats.
• Direct migration to cloud accounts.
• Maintains folder hierarchy and attachments.
• Provides advanced search filters for precise migration.
• Works on the latest Windows operating systems.

Why Choose It?

Corbett is ideal for users who want flexibility between desktop and cloud-based email platforms. If you are planning to switch to Gmail or Office 365, this tool can make the process seamless.

5. Jagware OST to PST Converter

Jagware OST to PST Converter is a budget-friendly yet reliable solution for converting OST files. Despite being affordable, it comes with most of the essential features needed for safe migration.

Key Features:

• Converts OST into PST format with complete data.
• Supports large OST files without corruption.
• Ensures data integrity during conversion.
• Easy installation and simple interface.
• Works across multiple Outlook versions.

Why Choose It?

This is a good choice for individual users or small companies that need a low-cost solution without compromising on quality.

Final Thoughts

Converting OST files to PST is often the only way to regain access to Outlook data when OST files get corrupted, orphaned, or when moving to a new system. While all the tools mentioned above serve this purpose, the best one for you depends on your needs: No matter which option you go with, these tools ensure that your emails, contacts, calendars, and attachments remain safe during the conversion process. By selecting the right OST to PST converter, you can overcome Outlook errors, prevent future data loss, and keep your communication workflow smooth.