PST to OST Convert Online Free PST to OST converter

How to convert PST to OST?


You can convert PST files to OST format in several ways. The most proven option is to download dedicated software that allows you to convert between the PST and OST formats. At the bottom you will find a list of software programs that support PST and OST files and can also save them in new file formats.

PST File Type


Full Name Outlook Personal Information Store Format
Developer Microsoft
Category Data Files

OST File Type


An OST file extension is a kind of file that allows users to save their email data and other information. It is also known as the "Offline Outlook Folder File" and takes up less space than the PST file. The OST File extension has been around since July 2000, but it only recently became popular because of its usefulness for those who rely heavily on Microsoft Outlook software. One of the main benefits about an offline OST is that it offers additional storage space for those who rely heavily on Microsoft's Hotmail service. An Outlook Offline Folder File folder allows users to store deleted emails, conversations, and attachments in a separate folder which makes it easier to recover data when necessary.

Full Name Outlook Offline Folder Format
Developer Microsoft
Category Misc Files

Software, that convert PST files


The list contains a list of dedicated software for converting PST and OST files. The list may also include programs that support PST files and allow you to save them with different file extensions.


PST to OST Converters

  • Microsoft Outlook iconMicrosoft Outlook
  • Microsoft Outlook for Mac iconMicrosoft Outlook for Mac
  • 2 PST to OST converters

PST and OST conversions