Finding the size of a file on a Mac OS

To find the size of a file, right click (by pressing the "ctrl" key and clicking) on the file icon.
The file icon for a Microsoft Word Document looks like: and the file icon for a text document looks like: .
To find the size of each file, right click ("ctrl" + click) on the icon. Choose "Get Info" from the menu:


The Get Info window will provide you with information about the file. You can see the name and type of file, when it was created, when it was last modified, the size of the file, file permissions (such as who can read and write to the file), and what program the file will open with. In this example, the file size is 20 KB: