The fastest way to change case in Word

Open your document and select the text you want to change. Go to the Home tab, find the Aa button in the ribbon (it sits near the font options), click the dropdown arrow next to it, and pick the case you want: Sentence case, lowercase, UPPERCASE, Capitalize Each Word, or tOGGLE cASE. Word applies the change instantly to your selection.

If you cannot find the button, you can also use the keyboard shortcut: select your text and press Shift + F3 to cycle through the case options. Each time you press it, Word switches to the next option in the list.

Key Takeaways

  • Select the text first, then use the Aa button on the Home tab to pick your case style.
  • Shift + F3 cycles through case options without opening any menu — useful if you prefer keyboard shortcuts.
  • The five case options are: Sentence case, lowercase, UPPERCASE, Capitalize Each Word, and tOGGLE cASE.
  • Case changes apply only to the text you selected; the rest of your document stays the same.

Finding the text case button when it is not visible

The Aa button usually sits in the ribbon under the Home tab, grouped with font formatting tools like Bold and Italic. If your ribbon is hidden or customized, you may not see it right away.

To unhide the ribbon, look at the top of your window. If you see a small up arrow or chevron, click it to expand the ribbon. If the button still is not there, right-click the ribbon itself and select Customize the Ribbon. In the dialog that opens, find Text Effects or Text Formatting in the left column, make sure it is checked, and click OK. The button should now appear.

What each case option does

Sentence case capitalizes only the first letter of the first word and any proper nouns. Use this when you have text in all caps or mixed case and want it to read like a normal sentence.

lowercase converts everything to lowercase letters. This is useful when you have a title or heading in all caps and want to make it smaller.

UPPERCASE converts everything to capital letters. Use this for acronyms, titles, or emphasis.

Capitalize Each Word puts a capital letter at the start of every word. This is common for titles and headings, though it capitalizes small words like "and" and "the" that some style guides prefer lowercase.

tOGGLE cASE flips every letter: uppercase becomes lowercase and lowercase becomes uppercase. This is rarely needed in everyday work but can help you spot case errors or reverse an accidental change.

Changing case in headers, footers, and text boxes

The case button works the same way in headers and footers as it does in the main document. Select the text, click the Aa button, and pick your case. The same applies to text inside shapes, text boxes, or tables.

If you are working in a header or footer and the Home tab is not visible, double-click the header or footer area to enter edit mode, and the full ribbon will appear.

Undoing a case change

If you change the case and then realize you made a mistake, press Ctrl + Z to undo the change. Word will restore the text to its original case. You can undo multiple times if you need to go back several steps.

If you have already saved the document and closed it, you cannot undo the change. For this reason, it is a good idea to save a copy of your document before making large case changes to important text.

Case changes and special characters

Word handles numbers and punctuation the same way regardless of which case option you choose — they do not change. Only letters are affected. So if you have text like "Project 2024: Final Report" and you change it to lowercase, it becomes "project 2024: final report". The numbers and colon stay exactly the same.

Accented letters (like é, ñ, or ü) also change case correctly. If you have French, Spanish, or other accented text, Word preserves the accents when you change the case.

Frequently Asked Questions

Can I change case for only part of a word?

No. Word changes case for whatever text you select as a whole. If you select "HELLO WORLD" and choose lowercase, both words become "hello world". To change only part of a word, you would need to select just that part first.

Does changing case affect formatting like bold or italics?

No. If your text is bold and you change it from uppercase to lowercase, it stays bold. All other formatting — color, font, size, italics — remains unchanged. Only the case of the letters changes.

What if the Aa button is grayed out?

The button is grayed out when you have not selected any text. Click inside your document, select the text you want to change, and the button will become active. Make sure you are on the Home tab when you look for it.

Can I change case in a table?

Yes. Click inside the table cell that contains the text, select the text you want to change, and use the Aa button or Shift + F3 the same way you would in the main document.

Is there a way to set a default case for new text?

No. Word does not have a setting to automatically apply a case style to text as you type. You have to select existing text and change it manually using the case button or keyboard shortcut.