How to easily extract calendar data from OST file of Outlook

As we all know, that OST (offline storage table) is a data storage file that is used by MS Outlook to store data of Outlook profile offline in the user local system. The complete data of Outlook profile emails, contacts, journals, tasks, calendar, and notes. If you are planning to extract calendar from OST file, then in this blog I am going to tell you how you can do it easily.

I am going to tell about the free manual process, as well as a paid third-party tool, for the abstraction process. You can go with any of them as per your choice, but if these conditions apply to your OST mailbox, then there is no other option then going with the Professional tool.

1 – The OST file is orphaned or damaged.

2 – The Outlook is not connected to the Exchange server.

3 – Outlook is not accessible due to software or hardware issue.

If these are the case, then you need an OST to PST migration tool.

So let’s get started –

1- Manual Free Process to take out calendars from .ost file.

The manual process is totally free of cost method to extract Outlook calendars from MS Outlook. Just follow these simple steps and draw out the complete data of calendars in just a few clicks –

1 – Open MS Outlook >> Click on File.


2 – Click on the Open and Export option.


3 – In the new window “Select Export to a file” >> Press Next.


4 – Select Outlook data file (.pst) >> Click Next.


5 – Select calendar to abstract calendar from the OST.

extract calendar from ost

6 – Mark the include subfolder box. >> Press Next.


7 – Provide the Destination Path >> Choose the duplication option as per your choice >> Click Finish.


8 – If you want security of this file then create password >> Press OK

create a password of the file

After exporting the calendar from the OST file in PST format, you can import this PST file in any Outlook account to access its data.

The manual process as coming to end here now let’s talk about one of the best premium OST file exporter utility.

The name of the software is MailsSoftware OST to PST Converter. This OST converter tool can easily download calendar from Outlook OST file in its original properties, and that’s too in just 3 simple clicks.

Apart from this, you can also export the complete data of .ost file in its actual properties to PST, EML, MSG, HTML, MHTML, and MBOX file format.

2- The professional way to import Outlook calendar

First, download the software from MailsSoftware official website. Install & Run it.

1 – Open the software click on Add file.


The software scans the complete OST mailbox and finds & fix all its bugs. After that, you can see the complete content of OST in its original property.

2 – Click on Export Button.


3 – In the new window –

Select “Export Calendars” option >> Provide Destination >> Click “Export” button.

extract calendar from ost

The data of the calendar will be abstract from OST in ICS format. You can add this .ics file to any Outlook version.

But if you specifically want to export calendar in PST format then follow this step.

Select Export Selected folder >> Mark Calendar folder >> Choose PST as export option >> Click export.

export calendar from outlook


Conclusion – I hope this informative blog will help you to extract calendar from OST file of MS Outlook. You can export calendar from Outlook healthy .ost file using the manual process. But in case of damaged .ost you can download the free demo version of MailsSoftware OST to PST converter.

The demo version will download calendar from outlook OST file in PST, EML, EMLX, HTML, MSG, ICS file format in original properties.

Both methods are free and safe you can use any one of them as per your choice.

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