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Easily convert your OST files online with no registration required. Convert your OST documents from Windows, Linux, or macOS. Simply drag and drop your file into the upload form, select the desired output format, and click the convert button. Once the conversion is complete, you can download your TSV file.
Depending on the OST file's size and format, conversion may take a few moments, but most files convert quickly. With advanced features, you can convert password-protected documents and have the results sent to your email.
Convert your OST documents anytime, anywhere, on any device—including mobile. Use this conversion app online 24/7—free for basic conversions.
Check our videoAn OST (Outlook Offline Data File) is a file format used by Microsoft Outlook to store a synchronized copy of mailbox data locally, enabling offline access to emails, calendars, contacts, and other items. It is primarily used by Microsoft Outlook and can be accessed or converted using tools like Kernel OST to PST Converter, Stellar Converter for OST, and SysTools OST Viewer. The OST file structure is based on the Messaging Application Programming Interface (MAPI) and supports advanced features like synchronization with Exchange Server, encryption, and data compression for efficient storage and security.
A TSV file is a plain text format used to store tabular data, where each row represents a record and columns are separated by tab characters. It is widely supported by spreadsheet applications like Microsoft Excel, Google Sheets, and data processing tools such as Python's pandas library. The format is simple, with no built-in metadata or advanced features, making it lightweight and ideal for straightforward data exchange, though it lacks support for complex data types or formatting.
You can also convert OST into many other file formats. Please see the complete list below.