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OST to PST Converter

Convert Outlook OST files to PST format online. Upload your OST file and download the converted PST file instantly.

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About This Tool

This online tool allows you to convert Outlook OST (Offline Storage Table) files to PST (Personal Storage Table) format. OST files are created by Microsoft Outlook when using cached Exchange mode, and converting them to PST format enables you to access your emails, contacts, calendar items, and other data in standard Outlook format or import them into other email clients. The tool supports large OST files and preserves all folder structures, metadata, and attachments during conversion.
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How to Use

  1. Click the upload area or browse button to select your OST file.
  2. Choose conversion options if needed (default settings work for most files).
  3. Click the 'Convert OST to PST' button to start the conversion process.
  4. Wait for the conversion to complete (processing time depends on file size).
  5. Download your converted PST file from the results section.
How to use converter ost para pst

Frequently Asked Questions

Find Quick Answers

What is the difference between OST and PST files?
OST (Offline Storage Table) files are created by Microsoft Outlook when using cached Exchange mode to work offline. PST (Personal Storage Table) files are the standard Outlook data files that can be used to store emails, contacts, calendar items, and other data locally, and can be imported into Outlook or other email clients.
Does this tool preserve all my email data during conversion?
Yes, the converter preserves all folder structures, email messages, attachments, contacts, calendar items, notes, and metadata during the conversion from OST to PST format.
Is there a file size limit for conversion?
The tool can handle large OST files, but very large files (over 2GB) may take longer to process. The actual limit depends on server configuration and available memory.
Do I need to install any software to use this tool?
No, this is a completely web-based tool. You only need a modern web browser to upload your OST file and download the converted PST file.
Is my data secure during conversion?
Your uploaded files are processed securely and automatically deleted from our servers after conversion. We do not store or share your data with third parties.

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