Convert OST to PST Manually

 Are you looking to convert OST to PST manually without using any software? If yes, you are in the right place.

In this guide, we’ll explain

  • What OST and PST files are

  • When you might need to convert OST to PST

  • How to do it manually

  • Limitations of the manual method

  • When to use an OST File Converter or OST to PST Converter Tool

This blog is written in simple words, so anyone — even someone new to computers — can understand and follow it.

What Is an OST File?

An OST file (Offline Storage Table) is a file created by Microsoft Outlook. It stores your emails, calendar, contacts, tasks, and other data on your computer. This file allows you to use Outlook even when you're offline.

But the OST file works only with the Outlook profile that created it. If your Outlook crashes or you lose your email account, the OST file may become useless — that’s when you may need to convert it to a PST file.


What Is a PST File?

A PST file (Personal Storage Table) is also created by Outlook, but it's more flexible. You can move it, save it as a backup, or import it into any Outlook account. It’s the best way to store and move your Outlook data safely.

Why Convert OST to PST?

You might need to convert OST to PST for several reasons:

  • Outlook is not opening

  • Your Exchange or Office 365 account is no longer available

  • You want to back up your emails

  • You’re moving Outlook data to a new computer

  • Your OST file is orphaned (not linked to a profile)

In such cases, converting OST to PST helps you recover and access your important emails.

Manual Method: Convert OST to PST Without Software

Before we begin, note that this method only works if your Outlook is working and you can access the OST file through your email account.

Step 1: Open Microsoft Outlook

Make sure you are logged into your Outlook account that created the OST file.

Step 2: Use the Export Feature

  1. Click on the File tab in Outlook

  2. Select Open & Export

  3. Click on Import/Export

  4. In the pop-up window, select Export to a file and click Next

  5. Choose Outlook Data File (.pst) and click Next

  6. Select the folders you want to export (e.g., Inbox, Sent Items)

  7. Click Next, choose a location to save the file

  8. Click Finish

You now have a PST file with your Outlook data. This file can be moved, backed up, or imported on another system.

What If Outlook Is Not Working?

Here’s the tricky part: if your Outlook is not working, your email account is deleted, or the OST file is orphaned, the manual method will not work.

Outlook needs to be able to connect to the email account to access the OST file.

In That Case, Use OST to PST Converter Software

If you cannot open Outlook or your OST file is corrupted, you should use an OST File Converter. These tools are built to:

  • Open OST files without Outlook

  • Repair damaged OST files

  • Convert them safely to PST format

  • Recover emails, contacts, calendar, and attachments

A good OST to PST converter software works in 3 simple steps:

  1. Add OST file

  2. Preview your data

  3. Convert to PST

Even if you are not tech-savvy, the process is usually simple and quick.

Features to Look For in OST to PST Converter Tool

When picking an OST to PST Converter, make sure it:

  • Supports large and damaged OST files

  • Shows preview before conversion

  • Converts everything: emails, contacts, tasks, etc.

  • Allows you to choose specific items

  • Works with all versions of Outlook and Windows

  • Is secure and doesn’t modify your original data

Some tools even offer a free demo version so you can try it before buying.

Manual Method vs Converter Software

FeatureManual MethodOST to PST Converter Tool
Requires OutlookYesNo
Works with orphaned OSTNoYes
Can recover damaged OSTNoYes
Easy to useSomewhatVery Easy
Exports selected items onlyNoYes
Free to useYesSome tools offer free versions

Final Thoughts

If your Outlook is working and your OST file is linked to your email account, you can convert OST to PST manually using the Export feature. It’s easy and safe and doesn't need extra tools.

But if you face any of these issues:

  • Outlook won’t open

  • OST file is not linked to any email account

  • You need to recover data from a crashed computer

Then, using a trusted OST File Converter or OST to PST Converter Tool is the best option. These tools make it easy to get your data back — no stress, no data loss.

Good OST to PST Converter software helps you

  • Save time

  • Avoid technical errors

  • Recover and secure your emails

So, depending on your situation, choose the method that works best for you.

Location: Sewak Park, Dwarka, Delhi, India

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