Set Excel 2013 cell size in millimeters (or inches for those relics living in US)

  • Open new excel sheet.
  • Select desired paper size (A4 or A3... of course), orientation and set margins.
  • Open View tab.
  • Click Page Layout under Workbook Views.
  • Press Ctrl+A.
  • Open Home tab.
  • Click Format under Cells.
  • Select Row height and enter desired size with mm suffix (or "in" for rednecks)
  • Click Format under Cells
  • Select Column width and enter desired size.
  • Open View tab.
  • Click Normal under Workbook Views.
  • Done.