The #NUM error occurs in your Excel spreadsheet when a function or formula contains invalid numeric values. Remove #NUM errors this way!

If you get #SPILL! error in Excel, check the error message associated and then follow these fixes to remove the #SPILL! error in Excel.

The Excel file will get saved to your PC with a .xlsx extension, which can be opened in any spreadsheet app, including Microsoft Excel, Apple Numbers, OpenOffice, LibreOffice, and more.