Convert OST to PST Free — Online & Instant
Convert OST to PST — Free Online
Fast, secure, no software needed.
📁 Drag & drop your file here
or click to browse • Max 100MB
✅ Free • ⚡ Instant • 🔒 Secure • 💻 No install
How to Convert OST to PST
Converting .ost files to .pst is fast and simple with OpenAnyFile. OST is a email format: OST is an offline Outlook data file for Exchange accounts. PST is a email format: PST is Outlook Personal Storage Table for emails and contacts.
- Upload your .ost file to OpenAnyFile
- Select PST (.pst) as the target format
- Click "Convert" and wait for processing
- Download your converted .pst file
Why Convert OST to PST?
There are several reasons to convert from .ost to .pst:
- Compatibility: .pst may be more widely supported by software and devices
- File size: Converting between formats can reduce file size for easier sharing
- Editing: PST may offer better editing capabilities for your workflow
- Sharing: Recipients may prefer .pst files for their daily use
About OST Format
OST is an offline Outlook data file for Exchange accounts. Category: Email. Extension: .ost. Created by: Microsoft.
About PST Format
PST is Outlook Personal Storage Table for emails and contacts. Category: Email. Extension: .pst. Created by: Microsoft.
Frequently Asked Questions
How do I convert .ost to .pst?
Upload your .ost file to OpenAnyFile, select PST as the target, and download the converted file.
Is OST to PST conversion free?
OpenAnyFile offers free file analysis. Conversion may require a one-time payment depending on the file.
Will I lose quality converting .ost to .pst?
OpenAnyFile preserves maximum quality during conversion. Some format-specific features may not transfer between different file types.
Can I convert .pst back to .ost?
Yes, you can convert .pst to .ost using OpenAnyFile as well.