How do you auto resize cells in Excel?

I have solved it like this:

1. Select the entire spreadsheet.

2. Double click the line in the margin in between the two rows.

This auto sizes every row not just the one row that I clicked on.

You can see a video of it here: Adjusting the Row Height of Rows in Excel

Select the data then from menu Format->Column->AutoFit.

For Excel 2010, the menu is Home, Cells, Format, AutoFit Column Width.

For Excel 2015 (Mac) Preview it is still the same menu as Excel 2 and up to 2003 so Excel 2010 looks an odd outlier

Row Heights: Highlight the rows you want to re-size. click on the ribbon's "Home" tab. In the "Cells" group, click on the "Format" icon -> a drop down menu will appear select "AutoFit Row Height".

Column widths: Highlight the columns you want to re-size. click on the ribbon's "Home" tab. In the "Cells" group, click on the "Format" icon -> a drop down menu will appear select "AutoFit Cell Width".

by the way, if you have used Word for awhile, you will recognize the drop down menu.