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A few weeks back, my organization was performing a migration of our organization’s mailboxes, during which the Exchange server suddenly crashed. Due to this unexpected catastrophe, several user profiles were corrupted. Meanwhile, there were multiple events and meetings lined up in my calendar for the next two days, and I needed to get a hold of those. For this, I needed to extract calendar from OST file. Here is what I did to resolve the issue and save myself from skipping meetings.
How to Extract Calendar from OST File | Direct Method
Step 1: Open Outlook and go to Calendar.
Step 2: Select the calendar to extract.
Step 3: Click on File and then Save Calendar.
Step 4: Provide saving location and specify options.
Step 5: Select .ics as saving file type.
Why would I need to extract calendar from an OST file?
The need for extracting calendar data from the OST file can arise in various situations, some of which are:
- Easy to access: To easily access the data, extracting it from OST file and converting it to a compatible format is essential.
- Create backup: Extracting data from OST file creates a backup to a more convenient format.
- Migration: When you are switching to a different email client, in this scenario, you need to extract calendar data.
Methods to extract Calendar from OST file
Calendars can be easily extracted from an OST file. The method with detailed procedure is listed below:
Method 1. Extract Calendar from an OST file using Outlook
You can use Import/Export wizard option to extract calendar data from an OST file and save it to PST file. Follow these steps carefully to extract calendar from OST.
- Launch your Microsoft Outlook application. Navigate to File>>Open & Export >> Import/Export.

- Click on Export to a file to a file option and click on Next.

- Select Outlook Data File (.pst) as the option and click on Next.
- Select Calendar to extract calendar from the OST file and select Include subfolders option and click on Next.

- Click on Browse to provide desired location to the PST file. Finally, click on Finish.
- Now, you have the OST file calendar extracted to a portable PST file at the specified location which you can load or import to any Outlook account to view it.
You can perform this process only if the OST file is healthy, else you need to first recreate the OST file and then perform the extraction. Also, the Exchange Server and original Outlook profile should be available. You cannot perform the process with offline OST files or orphaned OST files
Method 2. Extract Calendar from Orphaned or Corrupt OST file – Advanced solution
If the Exchange Server on which the OST file is created crashes, there is no direct method from Microsoft to access the data. For such situations, use an enterprise-grade OST to PST Converter tool that allows you to extract Outlook calendar from OST file.
First, locate the OST file on your local storage or use the following path:
Make sure to have a backup of the OST file to a secured location and then use the expert-recommended Kernel for OST to PST Converter tool to extract calendar data easily. This tool offers multiple features to make sure secure extraction and conversion of OST mailbox items like emails, contacts, calendars, tasks, etc. Also, it helps you with OST file repair in case of corrupted files.
The software also helps you with OST file repair, in case of corrupt, damaged, and inaccessible OST files, and moves them to PST, Exchange, Office 365, and other destinations.
Working procedure of the tool:
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- Quick Steps to Extract Calendar Using the Tool
- Launch the tool and click Browse and add the OST file to convert or extract Outlook calendar from. Click Next.

- Select the Calendar folder from the retrieved mailbox folders, preview any item if you need and then click on Next.

- Click on Save option on the top and then choose PST from the list. Click Next.

- Apply Filter options as per your need.

- Provide a saving path, apply saving preferences, and click on Finish.

- The saving process will get started and complete shortly.
You can easily access and extract OST data, including calendar, with this advanced and reliable tool. Download the free trial version of the tool and perform OST file recovery to understand its advanced functionalities better.
Final Thoughts
Calendars and their stored data are important for every user, as they contain crucial information. You can extract Outlook calendar from OST to PST using the above-mentioned Import/Export option only if you can access your OST files with Outlook. In case of inaccessible OST files, use the recommended tool to export all your OST data, including calendars. Also, you can export contacts from OST files with this software.
Frequently asked questions
Ans. Yes, you can extract calendar from OST file even if it is orphaned, given that the Outlook profile is not deleted and healthy. Use the import/ export utility of Outlook for this.
Ans. Yes, you can view calendar data stored within an OST file, simply by exporting the calendar data from OST to a PST file. Once the file is extracted, open it in Outlook and view the desired entries.
Ans. There is no direct manual method to extract calendar data without Outlook. In that case, the easiest and recommended way is to use an advanced OST Converter tool, which can directly open the OST file and export only the calendar folder into accessible formats.
