OST to PST Converter

Best OST to PST Tool (Mac or Windows Editions) for Unlimited Conversion of OST Emails, Contacts and Calendar to PST Outlook 2019, 2016, 2013, 2010 and 2007

(Average Rating Based on Ratings)

Free Download Free Download

Why CubexSoft OST to PST Converter?


Export every element of the inbox, including emails, attachments, contacts, calendars, and notes, with 100% accuracy. IT administrators and Microsoft MVPs have confidence in CubexSoft OST to PST Converter.


Works Offline

CubexSoft OST to PST Converter Tool is the perfect offline solution. You can simply install and run this tool on any Windows OS and Mac to export Offline Outlook OST file to PST, PDF, MBOX, EML, MSG, CSV, etc. It works even without an internet connection so it is much safer than an online OST to PST Tool.


Export Huge Sized OST

The tool export OST files without any file size limitation. The software cleared all the test of transferring large sized sample OST files i.e. up to 1 TB to multiple file formats. The feature is very important for corporate sector user which have huge sized database to transfer.


Independent Application

OST to PST Converter is a solitary tool which does not require configuration of MS Outlook or Exchange Server in your system to perform the conversion process. It is completely independent application which doesn't require any other application to depend upon. The tool only need OST files to transfer them in multiple file format.

OST Converter





windows 10

Features for the Best OST to PST Converter Tool

CubexSoft OST to PST Tool software for Mac and Windows allows you to powerfully move offline OST files to PST file format without opening Outlook. It supports both Windows and Mac operating systems and runs perfectly on all previous and current versions of Windows OS and Mac.

  • Convert Data from OST files: Emails, Contacts, Calendars, Journal and etc.
  • Easily batch convert unlimited OST files to another account/format at once.
  • Highly Safe and Secure program for OST file to PST migration
  • Convert OST to PST without any file size limitations
  • PST Split option for splitting large size of PST files
  • Supports to Batch Convert OST mails to PST
  • Multiple languages support for OST to PST conversion in desired language
  • Different options to load OST file - Add Files, Add Folders and Load Outlook Profiles
  • Allows to export OST file to PST of Outlook 2019 & earlier editions
  • Download and run the application on all versions of Windows OS or Mac OS
  • Includes option of Create log for messages not converted
  • Facilitate to choose and set the destination path as per need to save resultant file
  • Provide Separate PST per User function to create separate file for each user
  • To convert OST to PDF Read More.
  • To save OST files to Gmail Read More.
  • To transfer OST data to MS Office 365 Account Read More.

What's More to Expect from CubexSoft OST to PST Tool?


Upload OST Files to Multiple Cloud Apps

The OST File to PST Tool (Mac & Windows) is not only limited to conversion of OST data to PST. The application also allows to upload OST folders to different well-known cloud accounts with accurate folder structure and formatting properties.

The new software update supports direct migration of OST files to popular cloud apps -

  • Hosted Exchange Server
  • G Suite
  • Yahoo
  • IBM Verse

directly convert OST file

OST to PST Conversion in Multiple Ways with Mac or Windows OS Editions

CubexSoft OST to PST Tool is a powerful and accurate solution for batch exporting OST files to PST alongwith attachments. It offers multiple advance options that anyone can apply accordingly for desired conversion of OST emails to PST with complete details-

  • Separate PST Per User - Allows to create separate PST file for each user.
  • Split PST - PST splitting option helps users to break the oversized PST files into multiple smaller parts.
  • Change Language -Available in Multiple Languages like Dutch, French, German, Spanish, Swedish, Italy etc.

convert a large size ost files

Easily Convert Large-Sized OST File to PST

The All-New updated OST to PST Tool has capability to move large-size .ost files to Outlook PST format in a single processing. The process has shown error in previous version. But, now the tool is updated and launched after checking its size efficiency.

Moreover, the application will keep the data and formatting properties accurate during the batch export of OST files to PST.

OST file converter

Remarkable Features of OST to PST Converter
OST to PST - Best Tool for Mac OS or Windows OS to Batch Export & Convert Unlimited OST Emails, Contacts and Calendar to PST Outlook


ost to pst

Direct Convert OST Files to PST

It is now just a few second activity to convert OST files into PST in batch manner with entire items. The OST to PST Converter Tool extracts a very helpful feature of converting multiple Outlook offline files into personal storage (.pst) format just in one round. In addition, you can browse an OST file of any size and any Outlook versions i.e., Outlook 2019, 2016, 2013, and below versions. No trouble from where the file is extracted, users can feel free to add and convert OST files into PST with help of this utility.

ost to pst

Keeps All Items of OST Emails to PST

This OST file to PST Converter tool holds the internal folder structure of selected offline files while exporting them into PST format. There will be no changes in the internal grading of data folders/sub-folders and original formatting will be maintained throughout the procedure. Therefore, users need not to worry about any data loss because it is guaranteed that OST file conversion will be performed with complete accuracy.

ost to pst

Batch Export Unlimited OST Files to PST

To fasten up the process to migrate OST data to PST, the option of batch OST files to PST conversion is provided by both OST Converter for Mac & Windows OS. In a single folder user can keep multiple OST file, then select the folder and start OST file conversion process all in one go. This batch process helps to save time and effort in executing the multiple OST file migration process.

ost to pst

Different Options to Load OST File

The OST PST Tool provides Select Files/Folders option with sub-options Add Files, Add Folders and Load Outlook Profiles. Choosing Add Files button allow to load few desired OST files, Add Folders facilitate to load entire multiple OST folders and Load Outlook Profiles option will help to load OST file data directly from Outlook account.

ost to pst

Selective OST to PST Conversion for Mac or Windows OS

When a user selects OST file, OST PST Tool start reading its items and displays all of them with checkboxes. A user can select the desired folder by clicking on the corresponding boxes and export only that OST folder to PST file. This function help to save time and efforts of users.

mac ost to PST converter

Supports all Outlook and Windows Versions

OST to PST Converter has the capability to export any Exchange OST file to PST of any Outlook edition including Outlook 2019. The tool supports both 32bit and 64bit Windows OS editions. A user can download and use the tool on Win 10, 8.1, 8, 7, XP, Vista etc.

mac ost to PST converter

Preserves Meta Data of OST File to PST

With the help of OST to PST Converter, users can convert all emails along with attachments stored in Offline data file to Outlook PST file format. In addition, it keeps the meta-data of all items intact as the original, for example – to, cc, subject, size, etc. The OST transfer to PST software preserves the original formatting of OST file items even after conversion.

mac ost to PST converter

Provides Multiple Language Support

OST to PST Tool includes the option of Change Language. By selecting this property, a user can perform the conversion process in any kind of language. After clicking its checkbox, the option will enabled and provide the list of multiple languages i.e. Dutch, German, Spainish, Swedish and more.

mac ost to PST converter

Includes Create Log for Messages not Converted

Create log for messages not converted is another remarkable property offered by the OST PST Tool. A user can use this option to track the files that are not converted during the process. Once the process is finished, software will open a Notepad file showing the log details of Items Converted and Items not Converted.

mac ost to PST converter

Allows to Import OST File to PST with Attachments

Best OST to PST Converter is a great application which has been designed keeping all the needs of users in mind. The software is helpful in migrating OST mailbox to PST including all emails, contacts, calendars, tasks, journals and etc. Moreover, the software maintains to extract OST calendars to PST along with attachments in an exact form.

Software Prerequisites & Recommendations

                 ost to pst

Trial Limitations - OST to PST Tool for Mac or Windows OS. Free Download enables you to test the functionality of the tool. You can save up to 25 (Win), 10 (Mac) emails from OST to PST file format.


System Requirements


Intel® Pentium 1 GHz processor(x86,x64) or equivalent


Minimum 512 MB is required

Hard Disk Space

50 MB of free hard disk space

Trial Limitations

Convert first 25 OST files for free.

Supported Editions

Windows OS

Windows 11, 10, 8.1, 8, 7, Vista, XP

Mac OS

Monterey, Big Sur, Catalina, Mojave, High Sierra, Sierra, El Capitan, Yosemite

Electronic Delivery

The product will automatically delivered. Once the payment is received, you will get an email with the activation link that will contain the key to upgrade the license.

  Eula   Software Guide  Install/Uninstall

Comparison of Trial & Full Version

Feature Comparison of OST to PST Software - DEMO and Licensed Version

Features DEMO Version FULL Version
Convert OST Data Files
Dual Modes to Load OST Files
Allows Conversion of OST Files First 25 items per folder All Items
Browse choice destination path
Multiple saving options
Maintains original data integrity
Supports Both Windows & Mac OS
Live progress report
24*7 Tech Support & Secure 100%
Cost FREE $49

Frequently Asked Questions

Common Queries Related to CubexSoft OST to PST Tool


I want to move OST files directly to Office 365. So, if possible can you guide me the steps in brief?
  • Step 1. Install, Run and Open OST to PST Tool on any Windows machine.
  • Step 2. Go to Select Files/Folders and add OST files by using Add Files, Add Folders or Load Outlook Profiles button.
  • Step 3. Software read selected OST file and list all OST file items with checkboxes on left software window.
  • Step 4. Now, click on Saving Options button and select option Export to Outlook PST.
  • Step 5. Set sub-options as per need - Create Separate PST per User, Split PST, Change Language, Destination Path and Create log for messages not converted.
  • Step 6. Click on Convert button to start OST to PST conversion process. After process gets completed, an alert message will appear on the screen "Conversion Completed Successfully". Click OK and exit.

>Yes, it is possible to convert OST files to PST file in Outlook 2010. Moreover, the tool also supports Outlook 2019, 2016, 2013 and 2007.

Yes, Our OST to PST Converter software is completely bug free. You can use it smoothly on your system and convert OST to PST without facing any problem.

No, there is no file size limitation appended in our software. You are free to browse large OST file in our software and then import OST file into PST file format.

With the demo version of software for Windows OS, you can save only 25 items per folder. With the demo version of software for Mac OS, you can save only 10 items per folder. However, in order to save all the converted items, you need to purchase the full versions of the software

OST files can be converted without the need of having to convert all data unnecessarily. One can choose what data to be and not to be converted from Offline OST to Outlook PST. Check-boxes are provided against each single item and folder to select the preferred data for conversion. This will help manage conversion time by cutting it short according to the requirement.

Yes, you can move OST file entire data to another computer. Simply choose the compatible saving format and then you can easily transfer OST file to another machine without facing any trouble.

If you want to move only desired OST files to PST, then the tool has provided Add Files option. You can click on the same and load only the required OST files that you want to export into PST format. Go to Select Files/Folders >> Hit Add Files Option >> Go to location of OST folder and select required files.

Yes, the software does not require Exchange Server configuration during the conversion process. You are free to move OST folder to PST without the connecting with Exchange environment.

The OST to PST Tool is programmed by well-known developers. The app is launched after completing testing phase. You do not need to worry about the data. If you perform conversion with few OST file or with entire OST folder then the tool takes the responsibility of each and every data. The data integrity and folder structure remain accurate throughout the process.

Client Reviews

Know what Customers are saying about OST to PST Software


Why Choose CubexSoft Tools?


2M+ Happy

190+ Countries

18 Years'

100% Moneyback