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OST to CSV converter

Convert OST to CSV online from any device with a free converter.

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We have already processed 4,745,915 files with total size of 7,374,368 Mbytes

About Conversion app

Convert your OST files online—no registration needed. No matter your platform—Windows, Linux, or macOS—you can convert your OST documents rapidly. Drag and drop your file onto the upload form, pick the output format you need, and hit the convert button. After the conversion is finished, download your CSV file instantly.

Conversion time varies based on the OST file's size and complexity, but most files convert within seconds. Our advanced options include converting secured documents and delivering conversion results straight to your inbox.

Easily convert your OST documents from any location and any device, even on mobile. This conversion app is always accessible online and free for basic use.

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OST

Outlook Offline Storage File

An 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.

CSV

Comma Separated Values File

CSV is a simple, widely used file format for storing tabular data in plain text, making it easy to exchange information between different applications and systems. It is supported by numerous tools, including spreadsheet software like Microsoft Excel and Google Sheets, programming languages like Python and R, and database management systems. The format consists of rows of data separated by line breaks, with each row containing values separated by commas (or other delimiters like semicolons), and it can optionally include a header row, support text encoding, and handle complex data through quoting and escaping mechanisms.

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APIs available

Convert popular document and image file formats in your app. The GroupDocs.Conversion APIs are available for .NET, Java, and many other platforms and languages.

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How it works

How to convert OST to CSV

Step 1
Click inside the file drop area to upload OST file or drag & drop OST file.
Step 2
Click on Convert button. Your OST files will be uploaded and converted to CSV result format.
Step 3
Download link of result files will be available instantly after conversion.
Step 4
You can also send a link to the CSV file to your email address.
FAQ

Questions & Answers

Other Supported Conversions

You can also convert OST into many other file formats. Please see the complete list below.

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