How to delete 3,277 empty work sheets

[Lishka57]

This is my first (and possibly only) project in Excel.  All of my information fits on one page.  Apparently, I managed to create 3,277 extra empty pages. How can I delete them?  Thank you

[#2]

@Lishka57 You must have accidentally entered something a few thousand rows down and/or columns to the right.

Select the first empty row below your data. Press Ctrl-Shift-arrow_down. Delete all selected rows.

Select the first empty column towards the right side of your data. Press Ctrl-Shift-arrow_right. Delete all selected columns.

Save the file under a different name (just to be sure). Close and re-open. Does this fix it?

[#3]

@Lishka57 

choose any sheet and press right click by mouse, then select all sheets then delete.

[#4]

After selecting all, Ctrl+Click on the sheets you want to keep to unselect them.
It is also possible to Shift+Click to increase or decrease selections of sheets (as well as cells).
You may also drag and drop sheets to get them in a better order to be able to shift+click easier (depends on their actual order).

[#5]

It sounds the 3,277 pages are from 1 sheet and not multiple sheets so the grouping solution isn't needed. If this is an Enterprise version (Work) of M365, you can use Clean Excess Cell Formatting:
https://support.microsoft.com/en-us/office/clean-excess-cell-formatting-on-a-worksheet-e744c248-6925...

[#6]

@bosinander Thank you very much

[#7]

Thank you very much