The Find & Replace window does all the work for you

To replace every instance of a word or phrase in your document at once, open the Find & Replace dialog by pressing Ctrl+H (Windows) or Command+Option+F (Mac). Type the text you want to find in the "Find what" field, type the replacement text in the "Replace with" field, then click Replace All. Word will replace every match in the entire document in seconds.

This is faster and more reliable than clicking through each instance one by one. You avoid the risk of missing a match or accidentally replacing the wrong text. The dialog shows you how many replacements were made when it finishes.

Key Takeaways

  • Press Ctrl+H to open Find & Replace, type what you want to find and what you want it to become, then click Replace All.
  • Replace All changes every match in the entire document at once, and Word tells you how many replacements it made.
  • Use Match Case if you need to replace only uppercase or lowercase versions of a word, leaving others untouched.
  • Use Find Next and Replace One at a Time if you want to check each match before replacing it, in case some instances should stay as they are.
  • You can undo Replace All by pressing Ctrl+Z when ready after, which reverses all changes at once.

Where to find the Replace All button

The Find & Replace dialog sits in the same place on both Windows and Mac versions of Word. On Windows, press Ctrl+H. On Mac, press Command+Option+F. You can also reach it through the menu: click Home (or Edit on Mac), then look for Replace in the ribbon or menu bar.

The dialog has two main text boxes stacked vertically. The top one is "Find what" — this is where you type the text you want to remove or change. The bottom one is "Replace with" — this is where you type what should appear instead. Below these boxes, you will see buttons including Replace All, which is the one you need.

When to use Replace All versus Replace One at a Time

Use Replace All when you are confident that every instance of the word or phrase should be changed the same way. Common examples: fixing a misspelled name throughout a document, changing "the company" to the actual company name, or swapping out an old date for a new one.

Use Find Next and then Replace (one at a time) when some instances might need to stay as they are. For example, if you want to replace "bank" with "financial institution" but only in certain contexts, you should check each match first. This takes longer but prevents unwanted changes.

If you make a mistake with Replace All, press Ctrl+Z when ready to undo all the replacements at once. Word will restore your document to the state it was in before you clicked Replace All.

Using Match Case to replace only specific versions

By default, Find & Replace ignores whether letters are uppercase or lowercase. If you search for "word," it will find "Word," "WORD," and "word" all the same way. To change this behavior, check the Match Case box in the Find & Replace dialog.

With Match Case turned on, searching for "word" will find only lowercase instances and leave "Word" and "WORD" untouched. This is useful when you need to replace a word only in certain positions — for example, replacing "president" (lowercase) with "President" (capitalized) only where it appears mid-sentence, not at the start of a sentence where it is already capitalized.

Searching within a selection instead of the whole document

If you want to replace text in only part of your document, select that section first before opening Find & Replace. Highlight the text you want to search within, then press Ctrl+H. When you click Replace All, Word will only change matches within your selection, leaving the rest of the document alone.

This is helpful when you are working on a long document and want to make changes to one chapter or section without affecting the rest. After you close the Find & Replace dialog, your selection will still be highlighted so you can see exactly which area was changed.

What happens if you search for something that does not exist

If you click Replace All and the text you are searching for does not appear anywhere in the document, Word will show a message saying "Search key not found" or similar. No replacements will be made, and your document stays exactly as it was. This is a safety feature — it prevents accidental changes when you have typed the search term incorrectly.

If you are not sure whether a word appears in your document, use Find Next first instead of Replace All. This will jump to the first match if it exists, or show you the "not found" message. Once you confirm the word is there and spelled the way you expect, you can go back and use Replace All.

Using wildcards and special characters in Find & Replace

Word allows you to search for patterns, not just exact text. To use this feature, check the Use Wildcards box (or Regular Expressions on Mac) in the Find & Replace dialog. This lets you search for things like "any number," "any letter," or "anything between two specific words."

For most everyday replacements, you will not need wildcards. But if you are trying to replace something like "all instances of a number followed by a space and a word," wildcards can do it in one pass instead of manually finding each one. The wildcard syntax is technical, so check Word's built-in help if you need to use it.

Frequently Asked Questions

Can I undo Replace All if I made a mistake?

Yes. Press Ctrl+Z when ready after Replace All finishes, and Word will reverse all the replacements at once. If you have done other work since then, you can still undo, but it will also undo those other changes. For safety, save your document before doing a large Replace All if you are not completely sure about it.

What if I only want to replace the first few instances, not all of them?

Use Find Next and Replace instead of Replace All. Click Find Next to jump to the first match, then click Replace to change just that one. Repeat for each instance you want to change. Stop when you reach an instance you want to leave alone.

Does Replace All work in headers, footers, and text boxes?

Yes, Replace All searches the entire document, including headers, footers, footnotes, and text boxes. If you want to exclude any of these areas, you will need to search and replace in them separately or manually.

Can I replace text with nothing to delete it?

Yes. Leave the "Replace with" field empty and click Replace All. Word will remove every instance of the search text. This is useful for deleting repeated words, extra spaces, or unwanted characters throughout the document.

What is the difference between Replace All and Find & Replace in the sidebar?

The sidebar version (opened by Ctrl+F) only lets you find text and highlight matches. The full Find & Replace dialog (Ctrl+H) includes the Replace All button and all the options like Match Case. Use Ctrl+H when you need to change text, and Ctrl+F when you only need to locate it.