XLS is a file extension of MS Excel files and you cannot access the XLS file on Mac unless and until you have MS office on your device. This problem has become a big issue for Mac users because they face difficulty accessing analytical data present in the Excel XLS file. People store important information in an XLS file like employee names, contacts, designation, and many other statistical data. On the other hand, there are many organizations that use MS Excel to maintain the company’s revenue report. So, whatever may be in your excel file, we will tell you the technique to open an XLS file on Mac OS irrespective of the version you are using. You can read and access the XLS file on Mac without MS Excel installation.

read more:- https://www.macsonik.com/blog/how-to-open-excel-xls-files-on-mac/