Numbers to Excel How to convert dot numbers file to excel file on Microsoft Windows, Mac, and Linux too. Numbers to Excel http://ift.tt/2zZOjAr What is a .numbers file? Numbers Spreadsheet numbers .numbers files are spreadsheets, created with Apple Numbers, which is part of the iWork package. Numbers is available for Mac OS X and iOS and is a competitor to Microsoft Excel. .numbers files can contain tables, charts, formulas, and images.