How to Add File Size Column to SharePoint Online Document Library?

Requirement: Add file size column to SharePoint Online

How to Show File Size in SharePoint Online?

You can add the “File Size” column to any list view of the SharePoint Online document library to get the size of each file. Just follow these steps to add the file size column to SharePoint Online:

• Navigate to the SharePoint Online Document Library
• Click on Views drop-down in top-right corner area >> Click on “Edit Current View” 
• Search for the “File Size” field under “Columns” and include it in the view and set the order in which you want it to appear in your view
• Click on “OK” to save the changes to your view.

This adds the “File Size” column to the view and shows the size of each document in the view:

Please note, this is the size of the file without version history!