In a chart, click the category axis that you want to change, or do the following to select the axis from a list of chart elements: Click anywhere in the chart. This displays the Chart Tools, adding the Design, Layout, and Format tabs.
9 Answers. Since Excel 2007 (Windows) and Excel 2008 (Mac), the number of rows in a .xlsx, .xlsm or .xlsb worksheet is fixed at 1,048,576. That is 2^20. Excel only stores the data and formatting actually used, so there is no penalty for having such a large number of rows in every worksheet.
The maximum number of columns in Excel is 256. This is checked by the Excel export option, and an error is displayed in Excel if the limit is exceeded. The maximum column width in Excel is 255 characters or 1,726.5 points. This is not checked by the Excel export option.