--- description: Convert OST files to PST files with the best tool in the industry. OST to PST conversion tool. Download FREE version and try now! title: DataNumen OST to PST Converter image: https://www.datanumen.com/wp-content/uploads/2024/10/datanumen-ost-to-pst-converter-10-boxshot.png --- * [ ](https://www.facebook.com/DataNumen) * [ ](https://www.linkedin.com/company/datanumen) * [ ](https://twitter.com/DataNumen) # DataNumen OST to PST Converter Our DataNumen OST to PST Converter is the best tool to convert Outlook OST files to PST files: – Import OST File to New Outlook. – Open OST File in Outlook. – Support corrupt or damaged OST files. **Note:** * For PST file recovery, please use [DataNumen Outlook Repair](https://www.datanumen.com/outlook-repair/). * For OST file recovery, please use [DataNumen Exchange Recovery](https://www.datanumen.com/exchange-recovery/). [Free Download](https://download.datanumen.com/downloads/file/dotpc.exe)20+ Years Of Experience [ ![DataNumen OST to PST Converter 1.0 Boxshot](https://www.datanumen.com/wp-content/uploads/2024/10/datanumen-ost-to-pst-converter-10-boxshot.png) ](https://download.datanumen.com/downloads/file/dotpc.exe) ![1,685 votes, average: 4.90 out of 5](https://www.datanumen.com/wp-content/themes/datanumen/images/rating_45.png "1,685 votes, average: 4.90 out of 5") **4.90 / 5 (from 1,685 votes)** * ### Overview * ### Features * ### How to Recover * ### More Information * ### Related Products ## Why DataNumen OST to PST Converter? --- _![#1 Recovery Rate]()_ #### #1 Recovery Rate _![10+ Million Users]()_ #### 10+ Million Users _![20+ Years of Experience]()_ #### 20+ Years of Experience _![100% Satisfaction Guarantee]()_ #### 100% Satisfaction Guarantee ## Extremely Simple Interface --- [](https://www.datanumen.com/wp-content/uploads/2024/10/datanumen-ost-to-pst-converter-10.png) #### Convert [](https://www.datanumen.com/wp-content/uploads/2024/10/datanumen-ost-to-pst-converter-10-batch.png) #### Batch Convert [](https://www.datanumen.com/wp-content/uploads/2024/10/datanumen-ost-to-pst-converter-10-options.png) #### Options [Free Download](https://download.datanumen.com/downloads/file/dotpc.exe)20+ Years Of Experience [Buy Now](https://www.datanumen.com/ost-to-pst-converter-order/)100% Satisfaction Guarantee ## Main Features --- * Support Outlook 97+, and Outlook for Office 365 and Microsoft 365 OST files. * Support to convert mail messages, folders, posts, appointments, meeting requests, contacts, distribution lists, tasks, task requests, journals and notes in OST files. All properties, such as subject, to, from, cc, bcc, date, etc., are converted. * Support to convert mail messages in plain text, RTF and HTML format. * Support to convert attachments, including the documents and images attached to messages and embedded in HTML bodies. * Support to convert embedded objects, such as another message, Excel Worksheets, Word documents, etc. * The converted items are saved in personal folder files(.pst) that are readable by Microsoft Outlook and other compatible mail clients. * Support to convert deleted items, including mail messages, folders, posts, appointments, meeting requests, contacts, distribution lists, tasks, task requests, journals and notes. * Support to convert OST files as large as 16777216 TB (I.e. 17179869184 GB). * Support to split the output PST file into several small files. * Support to convert password protected OST files, both compressible encryption and high encryption(or best encryption) are supported. The OST file can be converted even if you don't have the password. * Support to generate fixed PST file in Outlook 97-2002 format and Outlook 2003+/Office 365 format. * Support to convert a batch of OST files. --- [Free Download](https://download.datanumen.com/downloads/file/dotpc.exe)20+ Years Of Experience [Buy Now](https://www.datanumen.com/ost-to-pst-converter-order/)100% Satisfaction Guarantee ## How to Convert Outlook OST to PST Files with DataNumen OST to PST Converter --- Start DataNumen OST to PST Converter. ![DataNumen OST to PST Converter]() Note: Make sure you shut down Microsoft Outlook and other applications that may access the OST file. Select the Outlook OST file to be converted: ![Select source file]() To select the file, input its name directly, or use the ![Browse]() button to locate the file. You can also use the ![Find]() button to search for the file. Specify the version of Outlook for the OST file in question if you are aware of it. You can use the combo box ![Select Format]() to do this. There are a number of available formats such as Outlook 2013-2019/Office 365 OST file. You can also choose “Auto Determined” for the format. If you do this, DataNumen OST to PST Converter will analyze the source file to see what the file format is, which takes more time. DataNumen OST to PST Converter automatically saves the converted data into a brand-new PST file xxxx\_recovered.pst, where xxxx represents the name of the source OST file. For example, if the source file is Outlook.ost, the converted file will be Outlook\_recovered.pst. You can rename the output file if you would like to: ![Set output fixed file]() You can input the file name directly or use the ![Browse]() button to browse and select the file. You can also select the format of the converted PST file in the combo box ![Select Format]() which is next to the edit box. There are two possible formats for you to select: Outlook 97-2002 and Outlook 2003-2019/Office 365\. DataNumen OST to PST Converter will choose a file format compatible with the Outlook version on the local computer automatically if you leave the format as “Auto Determined.” Click the ![Start Convert]() button. After that, DataNumen OST to PST Converter will start converting your OST file and show a progress bar: ![Progress Bar]() Once the convert process is complete, you will see a message that looks like this if it was successful: ![Success message box]() Hit “OK” and you should be able to open the converted PST file with MS Outlook or other email clients that are compatible with the file. In the converted file, the emails and other objects will be placed in their original folders. Lost & found objects will be put in folders named Recovered\_Groupxxx. ## More Information --- ![Specifications]() Specifications ![Case Studies]() Case Studies ![FAQ]() FAQ | **Version** | 1.0 ([Version History](https://www.datanumen.com/news/)) | | -------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Release Date** | October 20th, 2024 | | **Bitness** | 32-bit, 64-bit | | **Supported File Types** | OST | | **Output File Type** | PST | | **Supported Outlook Versions** | Outlook 97–2021; Outlook for Office 365; Microsoft 365 | | **Supported Exchange Server Versions** | Exchange Server 5.0 and later | | **Supported Exchange Protocols** | Exchange ActiveSync | | **Supported Account Types** | IMAP accounts (for example, Outlook.com, Gmail, and Hotmail), Microsoft 365 accounts, and Exchange accounts | | **Convertible Objects** | Email messages, attachments, embedded objects, folders, posts, calendar items, appointments, meeting requests, contacts, distribution lists, tasks, task requests, journals, and notes | | **Deleted Object Conversion** | Deleted email messages and other objects | | **Password-Protected Files** | Supported | | **Oversized Files** | Supported | | **Split Output Files** | Supported | | **Batch Conversion** | Supported | | **Supported Languages** | 95 languages | #### Requirements | **Operating System** | Windows | | -------------------- | -------------------------------- | | **Processor** | Intel or equivalent (x86, x64) | | **Memory** | 32 MB minimum (2 GB recommended) | | **Disk Space** | 34.5 MB | [More Case Studies ](https://www.datanumen.com/case-studies/) [More Articles in Knowledgebase ](https://www.datanumen.com/knowledgebase/) ## Related Products --- ![DataNumen Outlook Drive Recovery 10.2 Boxshot]() ### [DataNumen Outlook Drive Recovery](https://www.datanumen.com/outlook-drive-recovery/) Recover lost Outlook data, including emails and other objects from raw disks or drives [Details ](https://www.datanumen.com/outlook-drive-recovery/) ![DataNumen Exchange Recovery 10.0 Boxshot]() ### [DataNumen Exchange Recovery](https://www.datanumen.com/exchange-recovery/) Recover messages and other items from orphaned or damaged Microsoft Exchange offline storage files (.ost) [Details ](https://www.datanumen.com/exchange-recovery/) ![DataNumen Outlook Repair 10.2 Screenshot]() ### [DataNumen Outlook Repair](https://www.datanumen.com/outlook-repair/) Repair and recover corrupt Microsoft Outlook data files (.pst). [Details ](https://www.datanumen.com/outlook-repair/) ### ![DataNumen OST to PST Converter 1.0 Boxshot]() DataNumen OST to PST Converter [Free Download](https://download.datanumen.com/downloads/file/dotpc.exe) [Buy Now](https://www.datanumen.com/ost-to-pst-converter-order/) ![DataNumen]() Follow or like us on Facebook, LinkedIn and Twitter to get all promotions, latest news and updates on our products and company. * [ ](https://www.facebook.com/DataNumen) * [ ](https://www.linkedin.com/company/datanumen) * [ ](https://twitter.com/DataNumen) ### Featured Products * [DataNumen Outlook Repair](https://www.datanumen.com/outlook-repair/) * [DataNumen SQL Recovery](https://www.datanumen.com/sql-recovery/) * [DataNumen Exchange Recovery](https://www.datanumen.com/exchange-recovery/) * [DataNumen Access Repair](https://www.datanumen.com/access-repair/) * [DataNumen Excel Repair](https://www.datanumen.com/excel-repair/) * [DataNumen PDF Repair](https://www.datanumen.com/pdf-repair/) * [DataNumen Word Repair](https://www.datanumen.com/word-repair/) * [DataNumen Zip Repair](https://www.datanumen.com/zip-repair/) ### [Latest news](https://www.datanumen.com/news/) * [DataNumen Outlook Drive Recovery 10.2 is released on May 9th, 2025](https://www.datanumen.com/outlook-drive-recovery/) * [DataNumen Outlook Repair 10.2 is released on April 15th, 2025](https://www.datanumen.com/outlook-repair/) * [DataNumen SQL Recovery 7.3 is released on February 19th, 2025](https://www.datanumen.com/sql-recovery/) [ ](#masthead) ```json {"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.datanumen.com\/ost-to-pst-converter\/","url":"https:\/\/www.datanumen.com\/ost-to-pst-converter\/","name":"Convert OST to PST. 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