To change the units setting for the page size
- Open the File menu and choose Page Setup. The Page Setup dialog box opens.
- Click the Units button (marked with an abbreviation for a standard unit, such as "in" or "cm"). A menu opens.
- Choose the desired units setting from the menu.
- The menu closes and the Units button in the Page Setup dialog box changes to reflect the new setting.
- Click OK to close the Page Setup dialog box.