Select the row or rows you want to resize
Right-click the selected row number
Click Row Height
Enter the desired height
Click OK
Drag the bottom border of the row number up or down to adjust manually
Double-click the bottom border of the row number to AutoFit the row height
Use the Home tab
Click Format in the Cells group
Click Row Height
Enter the desired height
Click OK
To change multiple rows at once, select all desired rows before adjusting height
To set all rows in a sheet, select the entire sheet and change the row height
To AutoFit all rows, select the entire sheet and double-click a row boundary