How to Extract Calendar from OST File? With & Without Outlook

Max Wright | March 25th, 2025 | Email Migration

If you need to extract calendar from OST file, this guide will walk you through the best methods to achieve this. Whether you have Outlook installed or not, we will cover both manual and automated solutions for a smooth extraction process.

Microsoft Outlook stores all mailbox data, including emails, contacts, and calendars, in OST (Offline Storage Table) files. However, accessing or extracting calendar data from OST file can be challenging, especially when Outlook is not working or the OST file is orphaned.

Don’t worry! This blog provides two solutions for you. If you have an orphaned OST file, use an automated tool. If your OST file is linked to an Outlook profile, you can use manual methods.

Why Extract Calendar from OST File?

There are several reasons why users may need to extract calendar events from an OST file:

  • Backup & Migration: Users may want to extract their calendar data to transfer it to another Outlook profile or device.
  • Recover Deleted Calendar Entries: If a user has deleted an important meeting or appointment, extracting the calendar from an OST file can help restore lost data.
  • Convert Calendar to Other Formats: Many users prefer to save their Outlook calendar in PST, ICS, or CSV formats for better accessibility.

There are two primary ways to extract calendar data from an OST file. You can either use Outlook if the OST file is still accessible or opt for an automated tool if Outlook is unavailable. Let’s go through both methods.

How to Import Calendar from OST File Manually?

If your Outlook is working fine and the OST file is connected, you can manually extract the calendar using the following steps:

  1. Open Microsoft Outlook on your system.
  2. Click on File > Open & Export > Import/Export.
  3. Choose Export to a File and click Next.
  4. Select Outlook Data File (.pst) and hit Next.
  5. Choose Calendar from the mailbox folders.
  6. Click Browse to select a destination folder and click Finish.

This method allows you to extract calendar events from an OST file and save them as a PST file, which can later be imported into another Outlook profile.

Limitations of the Manual Method:

  • Requires Outlook installation and an active profile.
  • Cannot be used for orphaned or corrupted OST files.
  • The process may be complex for non-technical users.

How to Export OST Calendar to ICS File Automatically?

If Outlook is not accessible, the manual method will not work. In such cases, the Advik OST Converter is recommended. With this tool, you can quickly extract multiple calendar items from OST files in just five simple steps. You can also select specific calendar folders as needed. Plus, it preserves all calendar details, ensuring your data remains safe and easily accessible.

Click on the Free Download button and check it’s working process;

  buy button

Steps to Extract Calendar from OST File Without Outlook

Step 1. Run the software and add OST file having calendar data.

Run the software and add OST files

Step 2. Select the mailbox folder with calendar data.

extract calendar from OST

Step 4. Select ICS from multiple Saving Options.

Select ICS from multiple Saving Options

Step 5. Hit the Convert button and analyze the process.

extract calendar from OST

After Conversion hit the okay button and tool will automatically open a folder containing converted data. You can then easily find a file with the .ics extension.

extract calendar from OST

This is the most accurate and relevant solution to import Calendar data from OST file.

Watch How to

 

Why Automated Solutions Outperform Manual Methods?

There are many reasons to opt for this software to export calendars from OST file. Some of the reasons are as follows;

  • Powerful and Accurate Conversion: This tool is programmed to provide the most accurate and quick conversion. The tool ensures no data loss during the process OST to ICS Conversion.
  • 30+ Export Options: Apart from OST to ICS Conversion you can use this tool for OST to PST, PDF, EML, MSG, XPS, etc. file formats. You can also import OST to Thunderbird, Zimbra Mail, Windows Live Mail, etc. email client.
  • Simple and Easy-to-Use Graphical User Interface: The simple and intuitive interface makes it easy for anyone to use, regardless of technical skill level.
  • Supports Orphaned OST Files: Even if the OST file is orphaned or corrupted, the tool can recover and extract calendar data without any issues.
  • Additional Functionality: In addition to calendars, you can extract contacts from OST file and other items without any issues. It is a standalone tool for all the OST file conversion needs.
  • Dedicated Customer Support: In Case you are stuck somewhere while using this tool, you can contact our customer support for any help regarding this tool.
  • Supports All Windows OS: You can easily run this tool on any version of Windows such as Windows 10, Windows 8, Windows 7, Windows XP, etc. Also, you can easily install this tool on both 32-bit as well as 64-bit architecture Machines.
  • Free Demo Download: You can easily check the efficiency of the tool by downloading this software for free. To download OST Converter hit the download button below.

Final Words

That brings us to the end of this blog. We hope you found easy ways to extract calendar from OST file without any trouble. If your Outlook profile is active, you can use the manual method to export the calendar to a PST file. However, if Outlook is unavailable or the OST file is corrupted, an automated tool is the best solution for extracting calendar entries easily and efficiently. Choose the method that best suits your needs and ensure your important calendar data is accessible whenever required.

If you still have any queries related to this article feel free to chat with our customer support executives or email us at support@adviksoft.com.

Frequently Asked Questions

Q 1. How to Convert OST to ICS File?

Ans. Follow the below steps to export OST calendar to ICS file.

  1. Run the above software and click Select files.
  2. Add OST file and click Next.
  3. Select Calendar folder and click Next.
  4. Now Choose ICS as saving option.
  5. Click Convert button to start process.

This is how you can export OST calendar to ICS file.

Q 2. What other data can be exported from OST file?

Ans. With this professional software, you can extract attachments from Outlook directly. The same can be done separately from OST file as well.

Q3. Can I extract calendar from OST file without Outlook?

Ans. Yes, you can use automated tool to extract calendar entries without Outlook.

Q4. What format can I extract my calendar in?

Ans. You can save your calendar in PST, ICS, or CSV formats, depending on your needs.

Q5. Will the manual method work if my OST file is corrupt?

Ans. No, the manual method requires an active Outlook profile. If the OST file is corrupted, use OST repair Tool to extract the calendar.

Q6. Can I extract only the calendar and ignore other data?

Ans. Yes, using Advik software, you can selectively extract only the calendar data.