Have you any idea how to open Outlook OST to Outlook PST file format? If no then follow the steps to operate OST to PST converter on your PC and complete the OST to PST conversion process readily. The free Outlook OST to PST conversion tool proficiently repairs single/multiple OST file folder via selection facility. After the OST recovery, Outlook users can convert OST file in multiple file extension such as- MSG, PST and EML in few instances.