SysTools OST Splitter
Split Oversized Outlook OST Files into Smaller Parts of img

(Average Rating 4.4 Based on 38 Reviews)
  • Split oversized OST file into multiple parts by Date, Size, Year & Folder
  • Repair Corrupted Outlook OST files before splitting
  • Allows user to split OST files without any file size limit into img
  • Tool provides option to break OST data items like emails, contacts, etc
  • Allows splitting newly created OST file & archive OST file
  • Outlook installation is required to divide OST file which is huge in size

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Descriptive Features of OST Splitter Software

Truncate Outlook OST

Truncate Outlook OST File Large in Size

Outlook OST file splitter permits the user to split the .ost file of any size into multiple smaller parts. Also, it is possible to break UNICODE as well as ANSI OST files without losing a single bit of information. Moreover, the tool keeps Meta properties like To, Cc, Bcc, etc., remains intact after the process completion

Break OST File

Option to Break OST File as Folder

On a folder basis, the user can divide multiple .ost files in Outlook 2010 & 2013 versions. The OST splitter software allows to create a single file for each desired folder available in Outlook OST file and moreover divide the particular folder by size as per user choice. Also, a user can split archive OST file.

Split OST File

Allows To Split OST File By Size

With this option, user can easily reduce OST file which is oversized into multiple parts, using the same size for each file. OST splitter software will reduce OST file of Outlook into multiple segments according to the mentioned file size range. The tool cannot support to break OST files that are already corrupted due to a large size.

Divide OST File

Option to Divide OST file by Year

If user wants to reduce OST file size according to year, then, use this 'split OST by year' option to break OST file large data yearly. The Outlook OST splitter software will allow to create a separate OST file on the basis of the year. Suppose, if a user has selected year from 2017 to 2020, then, they will get 4 files separately. Each file will have data of a single year within it.

Split Oversized OST File Outlook

Facility to Break OST file Data By Date

On the basis of specific date, users will capable to truncate Outlook OST file data by date. From OST splitter software, the user can decide a particular date and will break OST file of Outlook. In First one file, will contain the items 'of and prior' to the defined date and another will includes the data ‘after’ that date.

Save OST File

Make a New folder to Save OST File

Using OST Splitter Software, user can easily break OST File Oversized data into smaller parts without affecting the original structure of the source data file. After splitting, the tool will create a new folder to save the files in a customized way. By default, the .csv file will also be saved at the similar location.

Split OST File Software Screenshots

nsf converter tool
Step 1: OST Splitter
add nsf file
Step 2: Split OST File
horizontal & vertical view
Step 3: Split Option
export nsf to msf or eml
Step 4: Complete Status Report

Watch Live Video of OST Splitter

Download OST Splitter Software

Reduce OST File Size

Size: 20.8 MB Version: 3.0


Trial Limitations

Trial version of OST Splitter Tool allows users to Split first only 50 Items of OST file

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Installation Uninstallation EULA

System Specifications

System Specifications
  • Hard Disk Space: 60 MB of free hard disk space

Application Pre-Requisites

  • Microsoft Outlook 2003/2007/2010/2013/2016(32 or 64 Bit) should be installed and configured properly.
  • If you are using Window 10/8.1/8/7 or Vista, then please launch the tool as "Run as Administrator".

Supported Editions

  • Microsoft Windows – Windows 7/8/10 2003/2008/2012 (32-bit & 64-bit)
  • MS Outlook - MS Outlook version 2003,2007,2010,2013,2016 (32 or 64 Bit)

Frequently Asked Question

Does this software split Outlook archive Files without losing any data?
What is the maximum size limit of Outlook OST file, which is supported by your OST splitter software?
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Full Version


SysTools OST Splitter






OFFER Valid Till 31st May

SysTools OST Splitter + Split PST




$98   $69

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Note: The final price of software may be subject to sales tax depending upon your residence. The "Estimated Sales Tax" is displayed at the time of Check Out when you confirm the order.

Software will get delivered on your registered email id, within few minutes after placing the order.

Electronic Delivery: The delivery of product is automated. You will receive an email containing both the link to download the product and the activation key within few minutes after payment confirmation.

Purchase Order: You can place the order via Purchase Order(PO) Click Here

amazon        CR        NSIC         CIO       BBB
License Information Personal License Business License Enterprise License
File Limitation Split Unlimited OST Files Split Unlimited OST Files Split Unlimited OST Files
Bulk Conversion Support
24×7 Technical Support Unlimited Unlimited Unlimited
Free Product Updates
30 Day Money Back* Yes, Money is refundable Yes, Money is refundable Yes, Money is refundable

Features in Freeware & Commercial License

An Overview At The Contrast between Trial & Purchase License

OST Splitter FREE Version FULL Version Bundle Offer
Add OST File
Select Outlook ANSI & Unicode Format
Split Options (By Date, Size, Year, Folder)
Split OST File 50 items All Items All Items
Split PST
Add PST File
Select Outlook ANSI & Unicode Format
Split Options (By Size, Date & Year)
Split Outlook PST File first 50 emails

Frequently Asked Questions

Listed Commonly Asked Questions and Answers

What Clients Say

Break OST File Software is an outstanding solution that can divide OST file into multiple segments. It makes it possible to handle and split oversized OST file by dividing the files on basis of four different options i.e., Split by year, date, size and folder. Moreover, Outlook installation is needed while working in a very smooth way. I must say, Split OST software is the best, which is capable to divide OST file of Outlook. Thanks for making such an attractive tool

Julio Alexander, Poland

I would like to thanks to the dedicated team of support who helped me all the way to split OST file easily. This is the best tool and it works great for me. I would really recommend it to those who are looking for solutions to break Outlook OST file

Marrish Obenia, USA

I was getting in trouble to manage large OST files on my desktop. Also, I was facing a fear of corruption in OST because I knew that OST file becomes corrupted due to exceed the file size limit. All of sudden, one day, one of my colleague suggested me to use Outlook OST splitter Software. It was a wonderful experience for me. It can easily divide all my large OST files into small parts and also, it will get easy and simple for me to handle multiple OST files

Edward Copeland, US

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