Use Find & Replace to change all instances at once

The fastest way to replace every instance of a word in Microsoft Word is to use the Find & Replace feature. Open it by pressing Ctrl+H on Windows or Command+Option+F on Mac. Type the word you want to find in the "Find what" field, type the replacement word in the "Replace with" field, then click "Replace All" to change every instance in your document at once.

This method takes seconds and works whether you have 5 instances or 500. You do not have to go through your document one replacement at a time, and you will not miss any instances by accident.

Key Takeaways

  • Press Ctrl+H (Windows) or Command+Option+F (Mac) to open Find & Replace when ready.
  • Type the word to find in the first field and the replacement word in the second field, then click "Replace All" to change every instance in one action.
  • Use "Match case" if you want to replace only words that match the exact capitalization you typed.
  • Click "Find All" first if you want to see how many instances exist before you replace them.
  • You can undo all replacements at once by pressing Ctrl+Z when ready after if you make a mistake.

Step-by-step: replacing all instances

Open your Word document. Press Ctrl+H on Windows or Command+Option+F on Mac. The Find & Replace dialog box will appear on the right side of your screen (Windows) or as a floating window (Mac).

Click in the "Find what" field and type the word you want to replace. For example, if you want to change "colour" to "color" throughout your document, type "colour" here. Do not add extra spaces before or after the word unless you want to match only that exact spacing.

Click in the "Replace with" field and type the new word. In the example above, you would type "color". Now click the "Replace All" button. Word will replace every instance and show you a message telling you how many replacements were made. Click "Close" to shut the dialog.

Checking your replacements before you commit

If you are nervous about replacing all instances at once, you can preview them first. In the Find & Replace dialog, type your search word in the "Find what" field, then click "Find All" instead of "Replace All". Word will highlight every instance of that word in your document, and you can see them all at once.

If the highlighted words look correct, go back to the Find & Replace dialog, type your replacement word in the "Replace with" field, and click "Replace All". If you see instances you do not want to replace, close the dialog and edit those specific words by hand before running Find & Replace again.

Using "Match case" for exact capitalization

By default, Find & Replace ignores capitalization. If you search for "john", it will find "john", "John", and "JOHN". If you want to replace only words that match the exact capitalization you typed, check the "Match case" box before clicking "Replace All".

This is useful when you want to change a lowercase word to a capitalized word, or when you have a name that appears in different cases and you want to fix only some of them. For example, you could search for "john" with "Match case" checked and replace it with "John", leaving "JOHN" and other variations untouched.

Replacing whole words only

Sometimes you want to replace a word only when it stands alone, not when it is part of a longer word. For example, if you search for "cat", you might accidentally replace the "cat" in "category" or "concatenate". To avoid this, check the "Match entire word only" box in the Find & Replace dialog.

With this option on, searching for "cat" will find and replace only the standalone word "cat", not "cat" inside other words. This prevents unintended changes and is especially useful when working with technical documents or specialized vocabulary.

Undoing replacements if something goes wrong

If you click "Replace All" and realize you made a mistake, do not panic. Press Ctrl+Z on Windows or Command+Z on Mac when ready to undo all the replacements at once. Word will restore your document to its state before you ran Find & Replace.

This undo works only if you do it right away, before you make other edits. If you have already made other changes to your document, you may not be able to undo the replacements without losing those other changes. For this reason, it is a good habit to save your document before running a large Find & Replace operation.

Finding and replacing special characters or formatting

Find & Replace can do more than swap words. You can search for and replace line breaks, tabs, paragraph marks, and even text with specific formatting like bold or italics. To access these options, click "More options" or "Format" in the Find & Replace dialog (the button name varies by Word version).

For example, you could search for every instance of a word in bold and replace it with the same word in italics, or find every double space and replace it with a single space. These advanced replacements take the same "Replace All" approach and work just as quickly as straightforward word replacements.

Frequently Asked Questions

Will Find & Replace work in headers, footers, and text boxes?

Yes. Find & Replace searches your entire document by default, including headers, footers, footnotes, endnotes, and text boxes. If you want to search only the main body of your document and skip headers and footers, you can close those sections before opening Find & Replace, or use the "Find In" option if your Word version offers it.

Can I replace a word with nothing to delete it?

Yes. Leave the "Replace with" field empty and click "Replace All". This will delete every instance of the word you searched for. Make sure you use "Find All" first to see how many instances exist, so you do not accidentally delete something important.

What if I only want to replace words in a specific section of my document?

Select the section of text you want to search before opening Find & Replace. When you have text selected, Find & Replace will work only within that selection. If nothing is selected, it searches the entire document.

Does Find & Replace work the same way in Word Online?

Word Online has a Find & Replace feature, but it is simpler than the desktop version. Press Ctrl+H to open it, type your search and replacement words, and click "Replace All". You will not have access to options like "Match case" or "Match entire word only" in the web version.

Can I undo a Find & Replace if I wait a while after doing it?

The undo command works best when ready after you replace. If you have made other edits since the replacement, pressing Ctrl+Z may undo those other edits instead. To be safe, save your document before running a large replacement, so you can close and reopen it if something goes wrong.