Normally if you look at your Finder, the column ‘size’ for folders will show ‘-‘. Occasionally, for example when you want to see which folders take up the most space so you can free them up, you would want to see the size of those folders.
So, here is how to do that:

1. On the Finder menu, click on View -> Show View Options (or Command-J).
2. The ‘View Options‘ will be shown as below.
Mac View Option Window

3. Now the only thing you need to do is tick the checkbox next to ‘Calculate all sizes’, and your Mac will start calculating and showing folders sizes.


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  1. alwi fata
    May 10, 2010 at 11:46 am

    Thanks, i very veppy this posted. I MacOS Lover.

    • mahadewa
      May 16, 2010 at 9:56 pm

      Thanks, glad could be of help :)

  2. Wael
    February 10, 2011 at 9:20 am

    is there is away to show it in status bar like in explorer ? I dont wanna change the view to a list view to know the item info? also why it doesnt show image dimension? though I like mac more than windows but i guess windows explorer is far better than finder though internet explorer still suck big time

  3. Marc
    August 2, 2011 at 10:06 pm

    In my view options the size and calculate size options are not active, why is that?

    • mahadewa
      August 5, 2011 at 8:12 pm

      Marc, try to highlight your folder and select View Options for that folder.

  4. Richard
    December 17, 2012 at 6:57 pm

    Thanks for that, worked a treat for me.

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