How to Convert OST to PST File Online – Free & Secure Method [2025 Update]
-
Written By mydigisoft
-
Updated on June 5th, 2025
Are you a business user or an IT professional trying to find ways to OST to PST converter tools available online? You are not the only one. Microsoft Outlook, for instance, offers storage data in .OST (Offline Storage Table), and a plethora of users face challenges accessing these files without the original profile.
Whether your Outlook is corrupted or you’re changing devices, converting OST files to PST files is by far the easiest way to obtain access.
In this guide, we will demonstrate:
- ✅ The most efficient method of OST to PST conversion
- 🔐 How to convert encrypted OST files to PST
- 🚫 Methods that bypass the use of Outlook completely
- ⚡ Tools that have proven to be safe, free, and reliable online.
🔧 What would be the most effective way of converting an OST file to PST?
Best Opcitons, provided one does not have access to an exchange server, is to use an online OST to PST converter.
🔹 Recommended MyDigiSoft OST to PST Converter Tool
✅ No prerequisites for installation
✅ Works with encrypted OST files
✅ Fully compatible with Outlook versions 2021, 2019, 2016 and earlier
✔️ Steps for Online OST to PST File Conversion:
- Access the online OST to PST conversion portal
- Upload your .OST file (2GB free limit)
- Select your preferred export format (PST, EML, or MBOX)
- Press “Convert,” and the PST file will be available for download.
This process is fully functional on Windows 11, 10, and macOS.
🔐 Is it Possible to Convert Encrypted OST to PST?
Certain online services such as MyDigiSoft offer support for:
- OST files with passwords
- Files from revoked Microsoft 365 subscriptions
- Corrupted or orphaned OST files.
Just submit the encrypted file, and the service will automate decryption and conversion in a safe manner.
🚫 Is it Possible to Convert OST to PST Without Having Outlook Installed?
Removing Outlook from your machine does not pose a problem. Use a solution that does not rely on Outlook’s libraries and services.
❌ If Outlook does not open, do not attempt manual export methods.
✅ Utilize methods that pull data from the OST files.
📋 Comparison table goes here
| METHOD | OUTLOOK REQUIRED | HANDLES ENCRYPTED FILES | ONLINE TOOL | FREE OPTION |
|---|---|---|---|---|
| Manual Export via Outlook | ✅ Yes | ❌ No | ❌ No | ✅ Yes |
| MyDigiSoft OST to PST Online Converter | ❌ No | ✅ Yes | ✅ Yes | ✅ Yes |
| Open-source Tools | ❌ No | ❌ No | ❌ No | ✅ Limited options |
❓ Most Popular Questions (FAQ)
Q1. Best ways to convert OST file to PST file?
A: The best would be using a secure website that specializes in converting OST to PST files without the need of Outlook or Exchange Server.
Q2. Is there a free and safe OST to PST converter available online?
A: Indeed there are. Site like www.mydigisof.com offer free versions for smaller files and is trusted by IT people and system administrators.
Q3. Is it possible to perform an online conversion of OST files that are encrypted to PST?
A: Yes, certain robust online converters can deal with encrypted and damaged OST with total recovery of emails, attachments and metadata.
✅ Concluding Remarks
Accessing your Outlook data by converting OST to PST files is done quickly and securely online, eliminating the need to install bulky software or use untrusted tools.
🟢 Download MyDigiSoft OST to PST Converter. It’s free for small files, works on encrypted OSTs, and does not require Outlook.
About The Author:
