# Folder & File Size

**URL:** https://resource.dopus.com/t/folder-file-size/14157
**Category:** Help & Support
**Created:** [October 18, 2012, 7:53am UTC](https://resource.dopus.com/t/folder-file-size/14157 "2012-10-18T07:53:47Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![Leo](https://resource.dopus.com/user_avatar/resource.dopus.com/leo/32/69732_2.png) [@Leo](https://resource.dopus.com/u/Leo)
#### Post date: [October 18, 2012, 11:28am UTC](https://resource.dopus.com/t/folder-file-size/14157/4 "2012-10-18T11:28:59Z")

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"Size (Bytes)" is the column you want.

 ![](https://resource.dopus.com/uploads/default/original/2X/6/669c3ee5f52ea3141f1065e34cb336c1dcd8fc16.png)  

The only way to define your own columns is to write a shell extension (or get us to add new ones 🙂).

If you're using columns like Sub-Folder Count which force Opus to read all the directory listings below a folder, then the foldersize calculation will be done and displayed as part of the bargain. See this FAQ for more: [Calculate Folder Sizes Automatically](https://resource.dopus.com/t/calculate-folder-sizes-automatically/2064/1)

Explorer will show a context menu for a completely locked file, but the menu won't let you do very much with the file. (Except maybe run Unlocker, which is a whole separate discussion.)

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