How to check folder size in macOS Finder

in macOS，By default，You cannot directly view the size of a folder in Finder's list mode.。But you can follow these steps to set it up，Makes it possible to display the size of folders in a list：

1.Open Finder and go to the folder you want to view。

2.Select "Show" in the menu bar > "Show Options" (or just use the shortcut Command+J)。

3.In the pop-up options window，Check "Calculate all sizes"。

4.Close options window。

Now，You can see the actual size of the folder in Finder's list mode.。It should be noted that，This setting is for a single folder，If you want to show size in other folders，Need to repeat the above steps。