|Microsoft Excel: Why your spreadsheet is so slowHow to deal with "Out of memory," "Not enough system resources," and more.|
When Excel spreadsheets get too bigExcel is capable of creating a very big spreadsheet, but the bigger it gets, the more memory is needed to keep it open on your PC.
In the current version of Excel, each spreadsheet has 1,048,576 rows and 16,384 columns (A1 through XFD1048576). Each cell can hold a maximum of 32,767 characters. I would not advise pushing these limits.