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Written By Evren Cole
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Updated on July 22nd, 2025
The single OLM file has multiple mailboxes, and the data stored in it is in the form of folders and subfolders. Mac Outlook uses OLM files to store various mail items, such as contacts, emails, notes, and attachments. OLM files created by Mac Outlook cannot be opened in Windows Outlook, as Windows Outlook can only open PST files.
A CSV file, or we can say a Comma Separated Value, stores data in the form of a table. It is a common file format that is easy to use and supported by a wide variety of applications. Sometimes users want to change the file format from OLM to CSV (only OLM contacts can be converted into CSV).
Some reasons are listed below:
Now we will discuss the best two techniques to convert the OLM files to CSV files. The two techniques are manual and professional solutions. Firstly, we explain the manual method.
Microsoft Outlook is used to implement the manual method.
This manual method is beneficial if you want to export contacts from a few OLM files to a CSV file, but not for a large number of files. Also, this technique requires more technical knowledge. So. We suggest you switch to a professional solution for a large number of files.
OLM Converter is the most popular tool for the conversion of OLM Files to CSV in bulk. This tool provides various features to save OLM to PST, HTML, EML, MSG, EMLX, and so on. It also Convert OLM to MBOX and 10+ file formats. Although it is an easy process to convert the contacts of an OLM file to CSV without any prior technical knowledge, which is given below:
You have explored the top two techniques about how to convert OLM to CSV. Now, it is up to you to decide which method you want to implement. Here, we also explain the implementation of the professional method, which is a reliable and highly effective tool to convert OLM files to CSV in bulk.
You can convert the Mac Outlook calendar to ICS by following the below steps:
1. Launch the Software.
2. Add your OLM file having calendars, choose the calendar folder, and click Next.
3. Select the ICS file format as the Saving option
4. Define the desired location and click on the Convert button.
OLM Converter is a trusted tool to extract the contacts from OLM to CSV. Along with this, it facilitates users to Convert OLM to EML, PST, MBOX, MSG, HTML, PDF, and so on.
About The Author:
Evren Cole is an expert in Email and Data Management. She has a strong passion for technology and entrepreneurship. In her free time, she enjoys football, music, and reading books.
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