Each row is identified by a number in the row header.
There are more than one million rows in each Excel worksheet.
Cells are the basic storage unit for data in a spreadsheet program.
Row numbers are used as part of a cell reference such as A1, B23, or AA456.
Cell references identify the cell where data is located.
In a cell reference, the row number - such as 1, 23, or 456 - always comes after the column letter.