Free PST Converter
Convert to Any Format
Convert Outlook PST files to EML, MSG, MBOX, PST, PDF, HTML, MHT, TEXT, CSV, JSON, VCF, and ICS. Supports ANSI & Unicode PST, password-protected and corrupted files. Recover deleted emails.
Drop PST files here
or click to browse · multiple files supported
What Is the PST File Converter?
The PST File Converter is a free online tool that converts Microsoft Outlook PST files to 12 output formats: EML, MSG, MBOX, PST (email), HTML, MHT, TEXT, PDF, CSV, JSON (document), and VCF, ICS (contacts & calendar). It runs entirely on your device — no upload, no Outlook installation, no admin privileges.
PST (Personal Storage Table) is Outlook's proprietary format. The file begins with magic bytes "!BDN". Byte 10 indicates ANSI (14, older, 2 GB limit) or Unicode (23, larger files). Our converter validates the header, detects encryption, and performs deep content extraction — scanning for RFC 822 email headers, UTF-16LE strings, contacts, calendar events, and notes.
You can add multiple PST files at once for bulk batch conversion. The tool also recovers permanently deleted emails by deep-scanning unallocated PST space. It handles corrupted PST files using advanced pattern matching that bypasses damaged B-tree structures.
Password-protected and encrypted PST files are detected and scanned where possible. The converter supports both ANSI & Unicode PST types with no 2 GB size limitation. All data items — emails, calendar, contacts, notes, and attachments — are viewable in organized tabs before conversion. Filter by date range, item type, or keyword, and include or exclude recovered deleted items.
PST Converter Features
12 output formats, bulk conversion, deleted recovery, and more
Email saving: EML, MSG, MBOX, PST
Export emails to standard EML files, Outlook MSG format, MBOX archive, or back to PST. One tool supports all major email-saving options.
Document formats: HTML, MHT, TEXT, PDF, CSV, JSON
Save emails as HTML pages, MHT web archives, plain text, printable PDF, CSV spreadsheets, or structured JSON for archiving and analysis.
VCF & ICS: contacts and calendar
Extract contacts to VCF (vCard) and calendar items to ICS. View all data types: emails, calendar, contacts, notes, and attachments in separate tabs.
Add multiple PST files at once
Drop several PST files for bulk batch conversion. Each file is parsed independently with individual status tracking. Merge all or export per-source.
Recover permanently deleted emails
Advanced deep scan finds deleted email fragments in unallocated PST space and recovers them. Recovered items are tagged separately in the preview.
Corrupted & password-protected PST
Handles corrupted PST files with advanced scanning. Detects password protection and encryption type (none, compressible, high) from the file header.
Advanced scan for inaccessible PST
Deep content extraction scans for RFC 822 headers, UTF-16LE strings, and email patterns even in severely corrupted or partially accessible PST files.
Date-range & type filters
Filter by date range, item type (email, contact, calendar, note), or search by keyword. Include or exclude recovered deleted items with one click.
No Outlook required — no admin privilege
Run the converter as a standard/guest user online. No Microsoft Outlook installation needed. Works on Windows, Mac, and Linux.
No 2 GB size limit — ANSI & Unicode
Supports both ANSI (old, 2 GB limit) and Unicode (large files) PST types. The tool scans up to 100 MB of content per file with no artificial size cap.
Remove S/MIME & OpenPGP encryption
Detects and reports S/MIME and OpenPGP encrypted content. The tool extracts what it can from encrypted PST files and flags protected messages.
100% private — no upload
PST is read and parsed entirely on your device. Nothing is sent to any server. Your data stays safe — ideal for sensitive Outlook data.
How to Convert PST Files Online
Four steps — no install, no Outlook, no admin rights
Open PST Converter
Navigate to the PST Converter page. The upload area is ready for single or multiple files.
Drop PST files
Drag and drop one or more .pst files. The tool validates headers, detects ANSI/Unicode, encryption, and scans for content including deleted items.
Browse & filter data
View extracted emails, contacts, calendar items, and notes in separate tabs. Apply date-range, type, or keyword filters. Toggle deleted recovery.
Choose format & convert
Pick from 12 output formats (EML, MSG, MBOX, PST, HTML, MHT, TXT, PDF, CSV, JSON, VCF, ICS). Click Convert & Download.
Free vs Paid — PST Converter
Get started free, upgrade when you need more power.
Unlock the Full Power of PST Converter
Remove daily limits, process larger files up to 500 MB, enable batch processing, and get priority support.
File Viewers includes:
- 21 file viewers included
- Unlimited daily uses
- 100 MB file size limit
- All file formats supported
- Email analysis tools
Also available in the All Tools Bundle
User Q&A
Common questions about PST conversion features
Can I convert multiple PST files at once?
Yes. Drop several PST files into the upload area. Each file is parsed independently and you can convert all extracted items together or export per-source file using the merge/split option.
Does it recover deleted emails from PST?
Yes. The tool performs a deep scan of the PST file to find deleted email fragments in unallocated space. Recovered items appear in the 'Recovered' tab and can be exported in any format.
Can it handle password-protected PST files?
The tool detects password protection and encryption type from the PST header. It scans for readable content even in protected files. For full decryption, the password is typically needed in Outlook.
What about corrupted PST files?
The advanced scanner can extract content from corrupted PST files by scanning for email patterns (RFC 822 headers, UTF-16LE strings) regardless of the file's internal B-tree structure.
Do I need Outlook installed?
No. The PST Converter processes everything on your device. No Microsoft Outlook, no desktop software, and no admin privileges required.
What's the difference between ANSI and Unicode PST?
ANSI PST (version 14) is the older format with a 2 GB size limit. Unicode PST (version 23+) supports larger files and international characters. This tool handles both types without any size limitation.
Use Cases for PST Conversion
When and why to convert PST files
Outlook to Thunderbird
Convert PST to MBOX or EML to migrate from Microsoft Outlook to Mozilla Thunderbird seamlessly.
Cloud email migration
Export PST to EML or CSV before importing into Gmail, Office 365, Zoho, or other cloud email services.
Recover deleted emails
Recover permanently deleted emails and export them to EML, MSG, or any format for forensic analysis or archival.
Backup as PDF / HTML
Save Outlook emails as PDF or HTML for permanent readable backup that doesn't require Outlook to open.
CSV for reporting
Export email metadata (From, To, Subject, Date, Type) to CSV for spreadsheet reporting and compliance auditing.
No Outlook on this device
Open and convert PST on Mac, Linux, Chromebook, or any device without installing Outlook — just use this tool.
Legal & compliance
Extract PST content to EML, TXT, or JSON for e-discovery, legal hold, or regulatory compliance archiving.
Extract contacts & calendar
Extract contacts to VCF and calendar events to ICS from PST — import them into any address book or calendar app.
Frequently Asked Questions
Everything about the PST Converter
Q1. What is a PST file?
Q2. How many output formats are supported?
Q3. Do you upload my PST file?
Q4. Can I convert multiple PST files in one session?
Q5. Does it recover deleted emails?
Q6. What about corrupted PST files?
Q7. Does it support password-protected PST?
Q8. Is there a file size limit?
Q9. Do I need Microsoft Outlook installed?
Q10. Can I view emails, contacts, and calendar before converting?
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