Online OST Converter

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Information about OST file format

Name OST
Full name Off-line Storage Table
File extension .ost
MIME type
Developed by Microsoft
Type of format
Description OST is a file created by Microsoft Outlook. OST is used to store a copy of mailbox information from an Office 365, Exchange, or account. For example, OST files may contain email messages, contacts, tasks, calendar data, and other account information. OST files are very similar to the PST personal folder files but do not support large file sizes.
Technical details
Associated programs Microsoft Outlook
Convert from OST


    👍 What is the best OST converter?
    AnyConv. Our OST converter is fast, free and does not require software installation.
    🔺 How to convert Document files to OST?
    Choose files and upload them on the page. Select "to OST" and click "Convert". After a few seconds, you can download OST files.
    🔻 How do i change OST to another format?
    Upload your OST-file on the page. Select target format and click "Convert". OST conversion takes a few seconds.
    📱 Can I use OST converter on iPhone or iPad?
    Yes, you can convert OST files from iPhone, iPad and other mobile devices, because AnyConv OST Converter is a multi-platform web service.