Numbers that are stored as text can cause unexpected results, especially when you use these cells in Excel functions such as SUM and AVERAGE because these functions ignore cells that have text ...

Convert Number Cells to Text Highlight the cell or cells on your spreadsheet that you'd like to convert to text. These cells can be empty or filled.

Learn how to import or export data from a Text file to convert a Text (.txt or .csv) file into an Excel (.xlsx) spreadsheet easily using this procedure.