How to Extract a RAR Computer File. While downloading software applications for your business, you may encounter files that you cannot open.

When you open a RAR file on your Mac, it will turn into a folder where you can access all of the decompressed files. Visit Business Insider's homepage for more stories.

Going through the same menu for every file is a waste of your time, so instead set up Firefox to download RAR files to the same folder every time without asking.