OST file converter How to convert OST file?

What is OST file?


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.

OST Format details


Full Name Outlook Offline Folder Format
Developer Microsoft
Category Misc Files

Software, that convert OST files


The easiest way to convert a OST file is to save it in a different file format using dedicated software. Below you will find a list of software programs that can handle OST files. Open your OST file with one of them and save in another file format.


OST Converters

  • Convert OST to PST
  • Outlook Recovery Toolbox
  • Microsoft Outlook
  • Advanced Exchange Recovery
  • Kernel for Exchange OST Recovery
  • 5 OST converters

OST conversions