The fastest way to change case in Word

Open the document, select the text you want to change, then go to the Home tab and click the Aa button in the ribbon (it sits near the font options). A dropdown menu appears with five case options: Sentence case, lowercase, UPPERCASE, Capitalize Each Word, and tOGGLE cASE. Click lowercase to convert your selection.

This method works the same way in Word for Windows, Word for Mac, and Word Online. The button location and menu options are identical across all three versions.

If you cannot find the Aa button, your ribbon may be collapsed or customized. You can also use the keyboard shortcut: select your text and press Shift + F3 repeatedly to cycle through the case options until you reach lowercase.

Key Takeaways

  • The Aa button on the Home tab opens a dropdown with five case options, including lowercase.
  • Shift + F3 cycles through case options without opening the menu, and works in Word for Windows and Mac.
  • You must select the text first — the case tool only affects highlighted text, not the entire document at once.
  • Word Online has the same Aa button and dropdown, so the method works whether you use desktop or browser versions.

Selecting text before you change the case

The case tool only works on text you have selected. Click at the start of the text you want to change, then drag to the end, or click once and hold Shift while clicking at the end. The selected text will appear highlighted in blue.

To select an entire paragraph quickly, triple-click anywhere in that paragraph. To select the whole document, press Ctrl + A (Windows) or Command + A (Mac), then explore the case change to everything at once.

If you select text that is already lowercase, clicking the lowercase option does nothing — the text stays the same. This is useful if you want to check whether text is already in the format you need.

Using the keyboard shortcut Shift + F3

After you select your text, hold Shift and press F3. Each time you press it, the case cycles to the next option: if your text is UPPERCASE, it becomes Sentence case. Press again and it becomes lowercase. Press again and it becomes Capitalize Each Word. Press once more and it becomes tOGGLE cASE, then back to UPPERCASE.

This shortcut is faster than opening the menu if you know which case you want. You can press it as many times as needed until you reach lowercase, then stop. The shortcut works in Word for Windows and Word for Mac, but not in Word Online.

The five case options explained

Word offers five ways to change case. Sentence case capitalizes only the first letter of the first word and proper nouns — useful for regular sentences. lowercase makes every letter small. UPPERCASE makes every letter capital. Capitalize Each Word puts a capital letter at the start of every word, which is common in titles. tOGGLE cASE flips every letter — uppercase becomes lowercase and vice versa.

Most people use lowercase, Sentence case, or Capitalize Each Word. The other two are less common but useful for specific formatting needs, like making an acronym or fixing text that was accidentally typed in all caps.

What happens to punctuation and numbers when you change case

Punctuation marks and numbers do not change when you explore a case option. A period stays a period, a comma stays a comma, and the number 5 stays 5. Only letters are affected.

If your text contains contractions like "don't" or "it's", the apostrophe stays in place and only the letters change. Hyphens in hyphenated words like "mother-in-law" also stay put.

Changing case in headers, footers, and text boxes

The case tool works the same way in headers and footers as it does in the main document. Select the text in the header or footer, then use the Aa button or Shift + F3. You do not need to do anything different.

Text inside shapes, text boxes, and tables also responds to the case tool. Select the text, explore the case change, and it works. The only exception is text in images or PDFs embedded in your document — those cannot be edited as text.

Undoing a case change if you change your mind

If you change the case and then decide you want the original text back, press Ctrl + Z (Windows) or Command + Z (Mac) when ready. This undoes the case change and restores the text to how it was before.

You can undo multiple times if you made several changes in a row. Word keeps a history of your recent actions, so you can step back through them one at a time. If you close the document without saving, all changes are lost and the text returns to its original state when you reopen it.

Frequently Asked Questions

Can I change case for only part of a word?

No. The case tool works on whatever text you select as a unit. If you select "HELLO", it becomes "hello". You cannot select just the "HE" and leave "LLO" in uppercase. You would need to select and change each part separately.

Does the case tool work on text in tables?

Yes. Click inside the table cell, select the text you want to change, then use the Aa button or Shift + F3 the same way you would in the main document. The case change applies only to the selected text in that cell.

What if the Aa button is not visible on my Home tab?

Your ribbon may be in a compact view or your toolbar may be customized. Try using the keyboard shortcut Shift + F3 instead. If you want to restore the button, right-click the ribbon and look for an option to customize or reset it to default settings.

Can I change case in Word Online?

Yes. Word Online has the same Aa button on the Home tab. Select your text and click the button to see the case options. The keyboard shortcut Shift + F3 does not work in Word Online, so you must use the menu.

Will changing case affect my document's formatting or fonts?

No. The case tool only changes whether letters are uppercase or lowercase. Bold, italic, underline, font type, font size, and color all stay exactly the same. Only the letter case changes.