The quickest way to change case in Word
Open your document in Microsoft Word and select the text you want to change. Highlight the words by clicking at the start, holding your mouse button down, and dragging to the end of the text. You can also triple-click to select an entire paragraph, or use Ctrl+A to select all text in the document.
Once your text is selected, go to the Home tab at the top of the screen. Look for the button labeled Aa with a small arrow next to it — this is the text case button. Click the arrow to open a menu with five case options. Select UPPERCASE to convert all selected text to capital letters.
Word applies the change when ready. If you change your mind, press Ctrl+Z to undo and return the text to its original case.
Key Takeaways
- Select the text you want to change by clicking and dragging, or use Ctrl+A to select everything in your document.
- The case button is on the Home tab, marked with Aa and a small arrow, and opens a menu with five different case options.
- Word offers UPPERCASE, lowercase, Capitalize Each Word, tOGGLE cASE, and Sentence case — each one changes the text differently.
- You can undo any case change by pressing Ctrl+Z when ready after making the change.
All five case options Word provides
The case menu in Word gives you five choices, not just uppercase and lowercase. Each one changes your text in a different way, and you can switch between them as many times as you need.
UPPERCASE converts every letter to a capital. lowercase converts every letter to a small letter. Capitalize Each Word makes the first letter of every word a capital and the rest lowercase — useful for titles. tOGGLE cASE flips whatever case each letter already has: capitals become lowercase and lowercase become capitals. Sentence case capitalizes only the first letter of the first word and leaves everything else lowercase.
If you select text that is already in uppercase and choose UPPERCASE again, nothing changes — Word recognizes the text is already in that case. The same applies to all five options.
Selecting text before you change the case
Word will not change case unless you select text first. If you try to click the case button without selecting anything, the menu opens but the options are grayed out and do not work.
To select text, click at the very beginning of the first word you want to change, hold down your mouse button, and drag to the end of the last word. Release the mouse button. The selected text will appear highlighted in blue. If you select too much or too little, click somewhere else to deselect and try again.
For a full paragraph, triple-click anywhere inside it and Word selects the entire paragraph at once. For the whole document, press Ctrl+A on your keyboard. You can also click at the start of your text, then hold Shift and click at the end — Word selects everything between those two points.
Changing case in a table or specific column
If your text is inside a table, the case button works the same way. Select the cells you want to change by clicking the first cell and dragging to the last one, or by clicking one cell and Shift+clicking another. Then use the case button on the Home tab as usual.
Word does not have a way to change case in only one column of a table without selecting those cells first. If you have a large table and need to change case in many cells, selecting them all at once and explore one case change is faster than doing each cell individually.
What happens to numbers and punctuation
The case button only affects letters. Numbers, spaces, punctuation marks, and special characters stay exactly as they are. If you have text like "Order #2024-ABC", changing it to uppercase gives you "ORDER #2024-ABC" — the numbers and hyphen do not change.
This matters if you are working with product codes, addresses, or any text that mixes letters with numbers or symbols. The case change applies only to the letters in your selection.
Using Find and Replace to change case across a long document
If you need to change case in many different places throughout a long document, using Find and Replace can be faster than selecting each section one at a time. Open Find and Replace by pressing Ctrl+H. Type the text you want to find in the "Find what" field.
Click the More button to expand the menu, then look for an option labeled Match case or Format. Some versions of Word let you specify case in the Replace field. Type what you want to replace it with, then click Replace All to change every instance at once.
Find and Replace works best when you are looking for a specific word or phrase that appears multiple times. For changing the case of random text throughout the document, selecting each section and using the case button is usually simpler.
Why your case button might be grayed out
If the case button appears faded or does not respond when you click it, you have not selected any text. Click somewhere in your document to place your cursor, then select the text you want to change. The case button will become active once text is selected.
Another reason the button might not work is if you are in a read-only document. If the document is locked or protected, you cannot make changes to it. Check the title bar at the top of the window — if it says "Read-Only" next to the file name, you need to enable editing first. Click Enable Editing if a banner appears at the top of the document.
Frequently Asked Questions
Can I change case in a document I opened from email or OneDrive?
Yes, but Word may open it in read-only mode for safety. If you see a banner at the top saying "This document is in read-only mode," click Enable Editing to make changes. After that, the case button works normally.
Does changing case affect the original formatting like bold or italics?
No. If text is bold and you change it to uppercase, it stays bold. The case button only changes the letters themselves, not the formatting applied to them.
What if I change text to uppercase by mistake?
Press Ctrl+Z when ready to undo. Word remembers your last action and reverses it. If you have made other changes since then, undo will reverse those too, so undo right away if you want to keep everything else.
Can I change case in headers or footers?
Yes. Click inside the header or footer area to place your cursor there, select the text, and use the case button the same way you would in the main document. Word treats headers and footers like any other text.
Does the case button work in Word Online or only in the desktop version?
The case button is available in both Word Online and the desktop version of Word. In Word Online, it is in the same place on the Home tab. The steps are identical.