1. Click the Home tab to display the Font group.
The Change Case button looks like this: Aa.
2. Select the text you want to change.
3. Click the Change Case button.
The Change Case menu displays a list of options.
4. Choose the item you want from the menu.
Your text is modified to match the menu item that’s selected.
You can also use the Shift+F3 command to change the case of selected text. But that keyboard shortcut cycles among only three of the menu options in the Change Case drop-down list: UPPERCASE, lowercase, and Capitalize Each Word.