The quickest way to change lowercase to uppercase in Word

Open your document in Microsoft Word, select the text you want to change, then go to the Home tab and click the Change Case button (it looks like "Aa" with a dropdown arrow). Choose UPPERCASE from the menu. Word will convert your selected text instantly.

If you don't see the Change Case button, your version of Word may place it differently. In older versions or some installations, it lives under Format > Text > Change Case. The result is the same regardless of where you find it. The button is usually near other text formatting tools like Bold and Italic.

Key Takeaways

  • Select the text first, then use Home > Change Case > UPPERCASE to convert lowercase to uppercase in one click.
  • Word offers five case options: UPPERCASE, lowercase, Capitalize Each Word, tOGGLE cASE, and Sentence case.
  • If you need to undo the change, press Ctrl+Z immediately after the conversion.
  • The Change Case button works on any amount of text, from a single word to an entire document.
  • Case conversion only affects letters — numbers, punctuation, and spacing remain exactly as they were.

Selecting text before you convert it

You must select the text before Word can change its case. Click at the start of the text you want to convert, then drag to the end, or click once and hold Shift while clicking at the end. The selected text will highlight in blue so you can see exactly what you are about to change.

To select an entire document at once, press Ctrl+A (or Cmd+A on Mac). This selects everything in the document, including headers, footers, and text boxes. If you only want to convert part of a page, select just that section by dragging. You can also triple-click a paragraph to select the whole paragraph at once.

The five case options Word offers

The Change Case menu gives you five choices. UPPERCASE converts all letters to capitals. lowercase converts all letters to lowercase. Capitalize Each Word puts a capital letter at the start of every word. tOGGLE cASE flips whatever case each letter already has — uppercase becomes lowercase and vice versa. Sentence case capitalizes only the first letter of the sentence and the first letter after a period.

Choose the option that matches what you need. If you pick the wrong one, undo the change with Ctrl+Z and try again. Most people use UPPERCASE or Sentence case for everyday work, but the other options are useful for specific formatting needs.

What happens to punctuation and numbers

Case conversion only affects letters. Numbers, punctuation marks, and spaces stay exactly as they are. If you convert "Hello, World! 123" to uppercase, it becomes "HELLO, WORLD! 123" — the comma, exclamation mark, and numbers do not change.

This matters if you are converting text that contains abbreviations or acronyms. "Dr. Smith" converted to uppercase becomes "DR. SMITH", not "DR SMITH". The periods remain in place. Hyphens, apostrophes, and other special characters also stay unchanged.

Converting case in headers, footers, and special text areas

To change case in a header or footer, double-click the header or footer area to enter edit mode. The header or footer will become editable, and you can select and convert text the same way you would in the main document. When you are done, click outside the header or footer area to return to normal editing.

Headers and footers use the same Change Case tool as the rest of your document, so the process is identical. The same method works for text inside text boxes, shapes, or tables — click inside the area first to enter edit mode, select your text, then use Change Case normally.

Undoing a case change you did not mean to make

If you convert text and immediately realize it was a mistake, press Ctrl+Z to undo. This works as long as you have not made other edits since the conversion. If you have made other changes, undo will reverse those too, so you may need to redo some work.

If you discover the mistake much later, you can still undo it, but Word will undo every action back to that point. In that case, it is faster to select the text again and convert it to the correct case. You can also use Ctrl+Y to redo an action if you undo too many times.

Frequently Asked Questions

Can I change case in a table inside Word?

Yes. Click inside the table cell containing the text you want to convert, select the text, and use Home > Change Case the same way you would outside a table. The conversion works on table text just like regular text.

Does changing case work on text inside shapes or text boxes?

Yes, but you must click inside the shape or text box first to enter edit mode. Once you are editing inside it, select the text and use Change Case normally. The tool works anywhere text can be edited in Word.

What if the Change Case button is grayed out?

The button is grayed out when no text is selected. Select some text first, and the button will become active. Make sure you are clicking and dragging to highlight text, not just clicking once.

Can I change case in a Word document on my phone or tablet?

Word for mobile (iOS and Android) has limited formatting options. The Change Case tool may not be available in the mobile app. If you need to change case on a mobile device, open the document in a web browser using Word Online instead, where the Change Case button is available.

Does changing case affect bold, italics, or other formatting?

No. If text is bold before you change its case, it stays bold after. Italics, underlines, colors, and font choices all remain unchanged. Only the letters themselves change from lowercase to uppercase or vice versa.