If you apply this formula to a number, it will remove leading and trailing spaces but limit the in-between spaces to 1. For removing all the spaces from numbers, you may use the next two methods.

In this Excel tutorial, I’ll show you a quick and easy way to delete blank cells, which you might think of as rows, in the middle of a dataset without accidentally deleting adjacent data.

You can use Replace to remove a space from the cells in a row or column if they contain no spaces you want to preserve. Restrict Replace to your selected cell range by using the Replace options.