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Set Finder to show folder sizes

Posted in Finder Tips & Tricks

When browsing files on your Mac in the Finder’s list view, you’ll notice that the Size column only shows a pair of dashes instead of actual folder sizes. This is the default setting because calculating folder sizes takes time and can make the Finder less responsive. Thankfully, you can change this behavior with a few clicks.

Set the Finder to display folder sizes on a Mac:

• Open the Finder and click a location in the sidebar or navigate to any folder on your Mac
• Press Command + J or click View > Show View Options in the menu bar
• Tick the box next to “Calculate all sizes” and macOS will display folder sizes in the Size column
• Click the "Use as Defaults" button and close the inspector window

Don’t see the Size column? Follow these steps if the Size column is missing in the Finder:

• Open a new Finder window and click View > As List in the menu
• Right-click the Name column below the window toolbar and check the Size option. While at it, uncheck any other Finder columns you don’t need

If the Size column still won’t show up, the Finder window is too narrow to display all columns. Simply move the pointer to a side of any column so it changes to the drag pointer, then click and hold and move the column to reveal invisible columns. You can also reorder columns by dragging.

If you don’t want to always calculate folder sizes, you can always find the size of the folder by selecting it and pressing Command + I or Command-clicking it and choosing Get Info from the menu.