Quick Overview
- 1#1: SysTools OST to PST Converter - Converts corrupted, orphaned, or encrypted OST files to PST and multiple other formats while preserving email structure and attachments.
- 2#2: Stellar Converter for OST - Reliably converts inaccessible or damaged OST files to PST, EML, MSG, and other formats with advanced recovery features.
- 3#3: Kernel OST to PST Converter - Expertly handles password-protected, orphaned, or corrupted OST files converting them to PST with folder hierarchy intact.
- 4#4: MailsDaddy OST to PST Converter - User-friendly tool for bulk OST to PST conversion supporting all Outlook versions and maintaining data integrity.
- 5#5: Shoviv OST to PST Converter - Efficiently converts large OST files to PST with filtering options, incremental export, and support for multiple platforms.
- 6#6: BitRecover OST Converter Wizard - Converts OST to PST and 30+ formats including bulk processing, PST split, and advanced search filters.
- 7#7: Aryson OST to PST Converter - Professional converter for OST to PST that repairs corruption and supports batch conversion across Windows platforms.
- 8#8: eSoftTools OST to PST Converter - Batch converts damaged OST files to PST, Office 365, and other formats with selective folder migration.
- 9#9: SysInfoTools OST Converter - Recovers and converts OST to PST from orphaned files with preview and split PST options for large data.
- 10#10: Regain OST to PST Converter - Converts healthy and corrupted OST files to PST format with support for multiple email clients and filtering.
These tools were ranked based on their ability to process diverse OST scenarios (corruption, encryption, large files), preserve data structure (folders, attachments), offer intuitive interfaces, and deliver consistent performance, with priority given to robust features and practical value.
Comparison Table
Selecting the right OST to PST conversion software is critical for smooth data migration; this comparison table evaluates top tools like SysTools, Stellar, Kernel, MailsDaddy, Shoviv, and more, guiding readers through key features, efficiency, and usability.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | SysTools OST to PST Converter Converts corrupted, orphaned, or encrypted OST files to PST and multiple other formats while preserving email structure and attachments. | specialized | 9.4/10 | 9.6/10 | 9.2/10 | 9.0/10 |
| 2 | Stellar Converter for OST Reliably converts inaccessible or damaged OST files to PST, EML, MSG, and other formats with advanced recovery features. | specialized | 8.7/10 | 9.2/10 | 8.5/10 | 8.3/10 |
| 3 | Kernel OST to PST Converter Expertly handles password-protected, orphaned, or corrupted OST files converting them to PST with folder hierarchy intact. | specialized | 8.5/10 | 9.0/10 | 8.5/10 | 8.0/10 |
| 4 | MailsDaddy OST to PST Converter User-friendly tool for bulk OST to PST conversion supporting all Outlook versions and maintaining data integrity. | specialized | 8.2/10 | 8.4/10 | 9.1/10 | 8.0/10 |
| 5 | Shoviv OST to PST Converter Efficiently converts large OST files to PST with filtering options, incremental export, and support for multiple platforms. | specialized | 8.1/10 | 8.4/10 | 8.7/10 | 7.6/10 |
| 6 | BitRecover OST Converter Wizard Converts OST to PST and 30+ formats including bulk processing, PST split, and advanced search filters. | specialized | 8.2/10 | 8.5/10 | 9.0/10 | 7.5/10 |
| 7 | Aryson OST to PST Converter Professional converter for OST to PST that repairs corruption and supports batch conversion across Windows platforms. | specialized | 7.8/10 | 8.2/10 | 8.5/10 | 7.4/10 |
| 8 | eSoftTools OST to PST Converter Batch converts damaged OST files to PST, Office 365, and other formats with selective folder migration. | specialized | 7.8/10 | 8.2/10 | 8.0/10 | 7.5/10 |
| 9 | SysInfoTools OST Converter Recovers and converts OST to PST from orphaned files with preview and split PST options for large data. | specialized | 7.8/10 | 8.2/10 | 8.4/10 | 7.6/10 |
| 10 | Regain OST to PST Converter Converts healthy and corrupted OST files to PST format with support for multiple email clients and filtering. | specialized | 7.4/10 | 7.2/10 | 8.1/10 | 7.0/10 |
Converts corrupted, orphaned, or encrypted OST files to PST and multiple other formats while preserving email structure and attachments.
Reliably converts inaccessible or damaged OST files to PST, EML, MSG, and other formats with advanced recovery features.
Expertly handles password-protected, orphaned, or corrupted OST files converting them to PST with folder hierarchy intact.
User-friendly tool for bulk OST to PST conversion supporting all Outlook versions and maintaining data integrity.
Efficiently converts large OST files to PST with filtering options, incremental export, and support for multiple platforms.
Converts OST to PST and 30+ formats including bulk processing, PST split, and advanced search filters.
Professional converter for OST to PST that repairs corruption and supports batch conversion across Windows platforms.
Batch converts damaged OST files to PST, Office 365, and other formats with selective folder migration.
Recovers and converts OST to PST from orphaned files with preview and split PST options for large data.
Converts healthy and corrupted OST files to PST format with support for multiple email clients and filtering.
SysTools OST to PST Converter
specializedConverts corrupted, orphaned, or encrypted OST files to PST and multiple other formats while preserving email structure and attachments.
Direct repair and conversion of corrupt OST files to PST without Outlook, ensuring forensic-level data preservation
SysTools OST to PST Converter is a robust, standalone utility from SysTools Group that enables seamless conversion of Outlook OST files to PST format, supporting both healthy and orphaned OST files. It excels in recovering data from corrupt or password-protected OST files while maintaining the original folder structure, email attributes, and attachments. The tool offers batch processing, advanced filters like date range and subject, and exports to multiple formats including EML, MSG, and HTML, making it ideal for data migration without requiring Microsoft Outlook installation.
Pros
- Handles corrupt, orphaned, and password-protected OST files with high success rate
- Batch conversion for multiple files and advanced filtering options for selective migration
- No dependency on Outlook; supports all Outlook versions and preserves data integrity
Cons
- Full version is paid; demo limits to 25 items per folder
- Windows-only compatibility, no native Mac or Linux support
- Higher pricing tiers for enterprise use may deter individual users
Best For
IT professionals, administrators, and Outlook users needing reliable recovery and conversion of large or damaged OST files to PST for seamless access and archiving.
Pricing
Personal license at $39; Admin at $99; Enterprise at $199; free demo with limitations.
Stellar Converter for OST
specializedReliably converts inaccessible or damaged OST files to PST, EML, MSG, and other formats with advanced recovery features.
Advanced OST repair and recovery from severely corrupted files without requiring Outlook installation
Stellar Converter for OST is a specialized tool for converting Outlook OST files to PST format, particularly effective for orphaned, corrupted, or inaccessible OST files from Exchange or Outlook. It supports batch conversion, multiple output formats like EML, MSG, PDF, HTML, vCard, and vCal, while maintaining folder hierarchy, email properties, attachments, and formatting. The software includes advanced scan modes for deep recovery and a user-friendly interface suitable for both technicians and individual users.
Pros
- Superior recovery from corrupted, password-protected, and orphaned OST files
- Multiple export formats beyond just PST for versatile data migration
- Preserves complete data integrity including folder structure and attachments
Cons
- Demo version limits exports to 20 items per folder
- Windows-only, no macOS or cross-platform support
- Processing very large OST files can be time-consuming
Best For
IT administrators and users needing reliable recovery and conversion of corrupted or orphaned OST files to PST for Outlook migration.
Pricing
Starts at $39 for Personal license (1 year), $79 for Technician (unlimited), with lifetime options up to $159; free demo available.
Kernel OST to PST Converter
specializedExpertly handles password-protected, orphaned, or corrupted OST files converting them to PST with folder hierarchy intact.
Advanced repair for severely corrupt OST files that other tools often fail to process
Kernel OST to PST Converter from Nucleus Technologies is a specialized Windows tool for converting Outlook OST files to PST format, ideal for orphaned or corrupt files. It supports recovery of emails, contacts, calendars, and other items while preserving folder hierarchy and data integrity. The software also allows export to multiple formats like EML, MSG, PDF, and HTML, with no size limitations on OST files.
Pros
- Handles corrupt and orphaned OST files effectively
- Supports export to PST and 10+ other formats
- No file size limits and maintains folder structure
Cons
- Windows-only, no Mac or Linux support
- Demo limits conversion to first 25 items per folder
- Interface feels slightly dated compared to modern tools
Best For
IT professionals and users recovering data from damaged Exchange/Outlook OST files without needing Outlook installed.
Pricing
Personal license $99; Technician $299; Enterprise $599; free demo available.
MailsDaddy OST to PST Converter
specializedUser-friendly tool for bulk OST to PST conversion supporting all Outlook versions and maintaining data integrity.
Advanced corruption repair for severely damaged OST files without needing Outlook installation
MailsDaddy OST to PST Converter is a specialized Windows tool designed to convert inaccessible or orphaned OST files to PST format, allowing users to recover Outlook data without an active Exchange server. It supports batch processing, preserves folder structure, email formatting, attachments, and metadata during conversion. The software excels at handling corrupted OST files and is compatible with all Outlook versions, making it a reliable choice for data recovery.
Pros
- Intuitive interface requiring no technical expertise
- Effectively repairs and converts corrupted OST files
- Batch conversion with no file size limits and fast processing
Cons
- Windows-only, no Mac or Linux support
- Limited export options beyond PST (e.g., no direct EML or PDF)
- Free version applies watermarks and restricts full access
Best For
Users and IT admins seeking a simple, reliable tool to recover data from orphaned or damaged OST files for Outlook use.
Pricing
Free trial available; paid licenses start at $39 (Personal), $99 (Business), $199 (Enterprise) with lifetime validity and free updates.
Shoviv OST to PST Converter
specializedEfficiently converts large OST files to PST with filtering options, incremental export, and support for multiple platforms.
Advanced corruption repair for severely damaged OST files without data loss
Shoviv OST to PST Converter is a Windows-based utility specialized in converting orphaned, healthy, or corrupted OST files to PST format without requiring Microsoft Outlook installation. It supports bulk conversion, data filtering by date, size, and item type, and exports to multiple formats including EML, MSG, HTML, and PDF. The tool preserves folder structure, email attributes, and attachments, making it reliable for data migration and recovery scenarios.
Pros
- Repairs and converts corrupted OST files effectively
- Supports multiple output formats beyond PST
- Batch conversion with filtering options for efficient processing
Cons
- Limited to Windows platform only
- Full features require paid license after demo
- No Mac or cloud-based version available
Best For
Outlook users and IT professionals needing to recover data from damaged OST files on Windows systems.
Pricing
Personal license at $79; Technician at $199; Enterprise at $399; free demo with 25-item limit per folder.
BitRecover OST Converter Wizard
specializedConverts OST to PST and 30+ formats including bulk processing, PST split, and advanced search filters.
Standalone OST to PST conversion bypassing Outlook dependency, ideal for orphaned files
BitRecover OST Converter Wizard is a standalone Windows application specialized in converting Outlook OST files to PST format, along with support for numerous other formats like EML, MSG, PDF, and HTML. It excels at handling orphaned, corrupted, or password-protected OST files without requiring an Outlook installation. The tool offers batch processing to convert multiple files efficiently while preserving the original folder structure and email attributes.
Pros
- No Outlook installation required for conversion
- Handles corrupted and password-protected OST files effectively
- Supports bulk conversion and 10+ output formats
Cons
- Free demo limited to first 25 items per folder
- Full version requires paid license with no perpetual option
- Windows-only, lacks Mac or cross-platform support
Best For
IT professionals or users needing to recover data from orphaned or damaged OST files without Outlook access.
Pricing
Personal license $99, Technician $199, Enterprise $399; free demo with item limitations.
Aryson OST to PST Converter
specializedProfessional converter for OST to PST that repairs corruption and supports batch conversion across Windows platforms.
Standalone conversion of orphaned or corrupted OST files without needing Outlook installed
Aryson OST to PST Converter is a standalone Windows utility that enables users to convert orphaned or corrupted OST files to PST format without requiring Microsoft Outlook installation. It supports batch processing, preserves folder structure, email metadata, attachments, and formatting, while offering export options to EML, MSG, HTML, and PDF. The tool also includes advanced filters for date range, subject, sender, and more, making it suitable for selective migrations or backups.
Pros
- Batch conversion for multiple OST files
- Repairs and converts corrupted OST files
- Multiple export formats including PST, EML, MSG
Cons
- Windows-only, no Mac or Linux support
- Free trial exports only 25 items per folder
- No cloud or direct email server integration
Best For
Outlook users or IT admins needing to recover or migrate data from inaccessible OST files to PST for archiving or transfer.
Pricing
Free trial available; paid versions start at $39 (Personal), $129 (Admin), up to $399 (Technician with free updates).
eSoftTools OST to PST Converter
specializedBatch converts damaged OST files to PST, Office 365, and other formats with selective folder migration.
Direct repair and conversion of severely corrupted OST files without needing Outlook
eSoftTools OST to PST Converter is a dedicated Windows utility for converting Outlook OST files to PST format, including support for corrupted or orphaned OST files. It preserves folder structure, email properties, and attachments while offering batch processing and export to additional formats like EML, MSG, HTML, and PDF. The tool includes filtering options by date, sender, subject, and more, making it suitable for selective data migration without requiring Outlook installation.
Pros
- Recovers and converts corrupted OST files reliably
- Supports multiple output formats including PST, EML, MSG, and HTML
- Advanced filters for date range, sender, and subject-based selective conversion
Cons
- Trial limits conversions to 25 items per folder
- Windows-only, no Mac or Linux support
- Pricing tiers escalate quickly for enterprise needs
Best For
IT administrators and Outlook users needing to salvage data from damaged OST files for PST migration.
Pricing
Free trial (limited to 25 items/folder); paid plans: Personal $39, Corporate $99, Enterprise $229.
SysInfoTools OST Converter
specializedRecovers and converts OST to PST from orphaned files with preview and split PST options for large data.
Advanced recovery from corrupted or password-protected OST files
SysInfoTools OST Converter is a robust Windows-based utility specialized in converting OST files to PST format, along with support for other formats like EML, MSG, PDF, HTML, MBOX, and more. It effectively recovers emails, contacts, calendars, tasks, and attachments from healthy or corrupted OST files without requiring Microsoft Outlook installation. The tool preserves folder structure and metadata during conversion, supporting batch processing for efficiency.
Pros
- Handles corrupted and orphaned OST files reliably
- Supports multiple output formats beyond PST
- Batch conversion and no Outlook dependency
Cons
- Free demo limits to 25 items per folder
- Slower performance with very large OST files
- Windows-only, no Mac or Linux support
Best For
Users or IT admins needing to recover data from damaged OST files without installing Outlook.
Pricing
Personal license $39; Technician $129; Enterprise $199; free demo available with limitations.
Regain OST to PST Converter
specializedConverts healthy and corrupted OST files to PST format with support for multiple email clients and filtering.
Seamless repair and conversion of highly corrupted OST files preserving original structure
Regain OST to PST Converter is a Windows-based utility specialized in converting orphaned, corrupted, or inaccessible OST files to PST format without requiring Microsoft Outlook installation. It preserves email folder hierarchy, attachments, contacts, calendars, and other mailbox items during the process. The tool supports batch conversion, preview options, and compatibility with multiple Outlook versions from 2019 back to 97.
Pros
- Handles corrupted and orphaned OST files effectively
- Batch conversion for multiple files
- User-friendly wizard interface with preview
Cons
- Limited export formats beyond PST (no direct Office 365 or Live Exchange)
- Free version only scans without full conversion
- No support for Mac or Linux platforms
Best For
IT admins or users recovering data from damaged Exchange OST files on Windows systems.
Pricing
Personal license at $49; Technician license at $199; free trial with scan-only functionality.
Conclusion
The roundup of top OST to PST conversion tools showcases a mix of powerful solutions, with SysTools OST to PST Converter emerging as the top pick for its ability to handle corrupted, orphaned, and encrypted files while preserving email structure and attachments. Stellar Converter for OST and Kernel OST to PST Converter follow closely, offering robust recovery and format versatility suited to distinct user needs.
Take the first step toward efficient OST to PST conversion by trying SysTools OST to PST Converter, the top-ranked tool for reliable and comprehensive migration.
Tools Reviewed
All tools were independently evaluated for this comparison