I have mentioned the free methods to convert OST to PST format in Outlook 2016, 2013, 2010, 2007, etc., and there is a possibility that manual processes do not fulfill your expectation. In such a case, you should go for OST to PST Converter Tool, as this will help you convert OST files to PST format.
You can use the Ignissta OST to PST Converter to repair your OST or PST file. This tool allows you to convert your OST file into a PST file, which can be easily imported into Outlook. Our software is specifically designed to convert OST files to PST files quickly and efficiently. It maintains the original structure and formatting of your data, ensuring that all your emails, contacts, calendar events, and other information is preserved.

TO KNOW MORE, GO THROUGH OUR BLOG: How To Export OST To PST File Free – You Must Know
Convert OST file to PST format using an expert way "MailsDaddy Best OST to PST Converter application". It can import single or multiple OST files to PST format with selected email messages and other Outlook items. This OST Converter recovers entire email data from corrupted, inaccessible and orphaned OST files. Under this program, users have an option to save and migrate OST to MSG, MBOX, EML, Office 365 and Live Exchange Server accounts. Its converted PST files are compatible to open in all Outlook versions without any hassle. Read more: Convert OST to PST
Thanks for sharing this solution. MailsDaddy OST to PST Converter is a really awesome solution to easily convert offline OST files into PST format.
The majority of users desire to use manual conversion methods to turn their OST files into PST. However, manual procedures are unsafe to employ since they have several flaws that make it unclear if they are effective or not. For non-technical users, applying is challenging. Since it exports OST files to PST with all of the data they contain, including contacts, calendars, notes, and tasks, I need to recommend it as one of the best Softaken OST to PST Converter to Convert OST files to PST. Additionally, this tool converts OST files into a variety of additional formats, including HTML, NSF, ICS, MSG, MBOX, EML, and EMLX. Users are not restricted in any way when exporting OST files of any size to PST or other formats. It works with every edition of Windows and Outlook up to 11. For the benefit of users, it also offers a trial version for the free pack to export a few OST files to PST and test the functionality. Therefore, you must use the tool's trial or free edition before buying it.
Export Outlook OST files to PST files with only a few mouse clicks with DataVare Microsoft OST to PST Converter, which can also fix encrypted, damaged, or missing data. bulk OST email, calendar, diary, task, and other object conversion to PST. This allows you to transfer one or more OST files from PST. Both password-protected OST files can be exported to PST. You can rapidly save OST files into other formats, such as PST, with the aid of this program. Additionally, regardless of the precise position, your data structure retains the proper stability. This tool is the most reliable and secure converting technique. Therefore, even though anybody can use this program and carry out its duties, it is designed for experienced users. Users can transfer 25 things from OST to PST for free with this program, which can be downloaded for free from the system's official website in a free trial bundle.