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How to Split PST File Into Smaller Parts Instantly

split pst file into smaller parts

Nilesh Kumar | Modified: May 31, 2023 | PST file | 7 Minutes Reading

What exactly happen, when you got to know that your Outlook data file is exceeding its size limit? As we know, you can lose your essential data due to oversized data file issues. It also leads to data corruption problems in MS Outlook.

Therefore, obviously, you will try to split PST file into smaller parts. In order to make your task easy you will surely be looking for an instant solution that will divide large PST file.

Today, we have considered this issue and come up with different manual and automated solutions. However, in this write-up, you will get to know the answers to resolve your issue instantly.

Simply, read the complete blog to understand how to truncate oversized PST file.

Table of Content 

After considering all the above-mentioned queries, we will disclose multiple techniques to resolve these users’ questions. Let’s begin:

Quick Steps to Split PST File Into Smaller Parts

  • Download & Run the Software.
  • Add PST File and Select the Desired Destination Path.
  • Select the Required Options to Split PST File.
  • Preview the Split Information and Click on Next.
  • The Process of Splitting Large PST File Completed.

Manual Methods to Divide Oversized PST Files

Here, in this section manual methods are discussed to split PST files into smaller parts. The free solution to split oversized PST file is in two different ways, you can follow any one of them to divide large Outlook data file. Let’s start:

Method 1- Using Import/Export Wizard

1. Go to the File menu, then Account Settings >>Account Settings…

split large pst file into smaller parts
2. Now, the data files option will show, click on the ADD option in the Account Settings wizard.
3. Enter the file name having a file format of .pst and hit on OK to continue the process.
4. A new PST file is created, now you can check the newly created file on Data Files.
5. Then, click on option File>>Open & Export option and then choose Import/Export.
6. Now, in the Import/Export wizard, choose the option Export to a File, and hit on Next.
7. Select the current created Outlook data file (.pst) in Export to a file.
8. To export, select the required folders and also view the Include Sub-folders option.
9. Hit on Browse and choose the desired location to save the exported file.
10. Now, click on the Do not Export Duplicates Item option for removing the duplicate ones, and then, click on the Finish button.

Method 2- Using Archive Feature

1. Run the MS Outlook application and go to the File option.
2. Click on the Info option and then Tools>>Clean up Old Items.

3. Now, choose a Folder to Archive, select a Date in Archive items older than the box, and hit on Browse to save the archived files at your desired location.

split pst file into smaller parts
4. Click on the OK button to finish the process to divide oversized PST files.

How to Split PST File Without Data Loss?

Besides the above-mentioned ways, there are more methods to split PST file into smaller parts that are free to use. But they contain a high chance of risk for data loss. Also, high technical knowledge is required to execute these methods.

Therefore, in order to avoid such issues we recommend using an alternative solution that is completely safe and easy to use. Move forward to the upcoming segment, where we will discuss an automatic technique to divide large PST file.

If you want to divide PST file using an automated tool, you can use Outlook PST Splitter software which is a secure and trustworthy tool in order to resolve your problems. This utility offers 6 unique options to truncate PST file such as split large PST file by Size, Folder, Date, Year, Email-ID, and Category.

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Also, the application supports splitting corrupted or damaged Outlook mailbox components including Emails, Calendars, Notes, Contacts, and Journals with or without installing MS Outlook.

Some Beneficial Features of Automated Software

  • The tool allows splitting corrupted PST files due to its oversized.
  • This utility can truncate Outlook PST files into multiple files by size 1 MB to 1 TB as per the requirements.
  • This software is capable enough to work with PST files of all versions of Outlook (2019, 2016, 2013, 2010, 2007, etc.)
  • Install on all versions of Windows OS (10, 8.1, 8, 7, and all below versions).
  • It is not necessary to install MS Outlook to truncate PST files.

Steps to Split Large PST File into Smaller Parts

1. Download and Install the Automated Tool on your system.

2. Add PST file/folder(s) and browse desired destination path.

3. Choose a required split option (split by size, folder, date, year, email id, and category).

4. Then, check the summary of split information and click Next to proceed.

5. Finally, the process to split oversized PST files is completed.

split pst file into smaller parts

The best thing about this application is that you can Split 50 Items Free using the demo version. But, if you need to split Outlook PST files more than this size limit, you have to purchase the full version of this tool.

Why You Should Consider Splitting Your PST Files?

Splitting PST files into smaller parts offers several benefits that can greatly improve your Outlook experience. Here are the main reasons why you should consider splitting your PST files:

  • Faster Performance: Large PST files can slow down Outlook, making it frustrating to navigate and search for emails. By splitting the PST file into smaller parts, Outlook becomes faster and more responsive, allowing you to access your emails and data without delays.
  • Better Organization: Managing a large PST file can be challenging. It’s easy to lose track of important emails or attachments. Splitting the PST file helps you organize your data more effectively by creating smaller, more manageable files. You can sort them based on dates, senders, or specific projects, making it easier to find what you need quickly.
  • Reduced Data Corruption Risk: Large PST files are more prone to corruption, which can result in data loss. By splitting the PST file, you limit the impact of potential corruption. If one split file gets corrupted, the rest remain unaffected, reducing the risk of losing all your Outlook data. Smaller files also make it easier to back up and recover your data.
  • Convenient Data Transfer and Storage: Splitting the PST file into smaller parts makes it easier to transfer or share specific files. Instead of dealing with one large file, you can work with smaller, more manageable portions. It also helps if you have limited storage space, as you can distribute the data across multiple locations.
  • Compatibility with Older Outlook Versions: Older versions of Outlook have size limitations for PST files. By splitting the file, you ensure compatibility with these older versions and avoid any issues when trying to open or access an oversized PST file.

Also find how to truncate Outlook PST file by Email ID, Size, Date, Year, and Folder.


In this article, we have provided you with the solution to Split Large PST File into smaller parts using the manual as well as automated solutions. But we advised using the third-party tool as manual methods have their own severe risk and require high technical knowledge to split PST files. So, we recommended using the safe and secure automated tool to split oversized PST files.

Frequently Asked Questions

Q. How to split PST file without Outlook?

A.To split PST file without MS Outlook installation, you just need to download the tool mentioned above. Because to split large PST file into smaller parts, this tool doesn’t need Outlook installation in your system.

Q.  Can we split corrupted or password-protected PST files?

A. Yes, we can easily split the corrupted or password-protected PST file with the help of an automated solution as this solution supports both password-protected and corrupted PST files.

Q. How to Split 50 GB PST File?

A.To split a 50GB PST file, we recommend you use the automated solution. Because it’s the easy way. This automated solution provides easy splitting of PST files from 1MB to 1TB.