1. Open Outlook 2011.
2. Click File, then select Export.
3. Select Outlook for Mac Data File (.olm), then Items of the following types: , and uncheck everything except Calendar. Click the right arrow to proceed.
4. Select No, do not delete items, then click the right arrow to proceed.
5. Name the file, select a location to save it, then select
6. Click

A copy of your calendar is now saved in an .olm file format.