Find and Replace Capital Letters in Word

In Microsoft Word, press Ctrl+H on Windows, enter the text to search for, and use More > Match case when the difference between uppercase and lowercase matters. To find uppercase English letters generally, use Word’s desktop Find and Replace with wildcards and the pattern [A-Z]; to turn a selected passage into lowercase, use Home > Change Case > lowercase instead.

What “Capital Letters” Can Mean

The right method depends on what you mean by capital letters. You might want to locate a particular word only when it begins with a capital, find every uppercase character in a document, replace an incorrectly capitalized name, or convert a passage from uppercase to lowercase. These are different jobs: a case-sensitive search is suited to a known word, wildcards can locate character patterns, and Change Case alters the capitalization of selected text.

For example, searching for May with Match case enabled can distinguish that exact capitalization from may. Searching for [A-Z] with wildcards enabled looks for uppercase English letters, one character at a time. Selecting a paragraph and choosing lowercase changes all its letters to lowercase, while leaving punctuation and numbers as they are.

It is also useful to distinguish capitalization from formatting. Bold, font size, and font color affect how text looks; uppercase and lowercase are properties of the characters themselves. Find and Replace can search for text and, in some cases, formatting, but changing the font or applying bold does not convert a letter’s case.

Find Text With Its Exact Capitalization

When you know the word or phrase, ordinary Find and Replace is the most controlled approach. In Word for Microsoft 365 on Windows, open the document and press Ctrl+H, or choose Home > Replace. Type the text in Find what and the intended replacement in Replace with. Expand More if the additional search options are not visible, then select Match case.

For example, if a document contains both US and us, searching for US with Match case selected finds the uppercase form rather than treating the two forms as equivalent. Use Find Next first to inspect a match. If it is the right one, choose Replace to change that occurrence, or Replace All to change every matching occurrence in the search scope.

Match case is especially helpful for acronyms, product names, abbreviations, and code-like text. A case-sensitive search for iPhone, for example, can locate that exact form without also matching a differently capitalized version. Conversely, leave Match case off when you intend to find a word regardless of how it is capitalized. Always inspect the first few matches before using Replace All, particularly in a long document.

Find Uppercase Letters With Wildcards

To search for uppercase letters without knowing which words contain them, use Word’s wildcard option in the desktop application. Open Replace, expand More, select Use wildcards, and enter [A-Z] in Find what. The square brackets describe a set of possible characters, and the hyphen specifies a range: in an English-language document, A through Z. This pattern matches one uppercase letter at a time.

Choose Find Next to check what Word locates. With this pattern, a word such as Word contains two separate matches, W and the rest only if those letters are uppercase; in fact, only W matches. A word such as NASA contains four matches. This is a character search, not a search for whole uppercase words, so it can also find capitals at the start of sentences and inside names.

If you want a run of one or more uppercase letters, Word’s wildcard repetition character can be added: [A-Z]@. It can match a continuous sequence such as NASA or PDF. Test the pattern with Find Next before replacing anything, since the boundaries of a match may not be the boundaries of a word. For a complete word, a pattern such as <[A-Z]@> uses Word’s wildcard word-boundary markers; verify the results in your version and document before applying a bulk change.

Wildcard search is a specialized Word feature, not the same as regular expressions in programming tools. Use wildcards only when the pattern is genuinely useful. If you need one known acronym or name, searching for the exact text with Match case is simpler and easier to verify.

Replace Matches Without Changing More Than Intended

After entering a wildcard pattern, type the literal replacement in Replace with. For example, finding [A-Z] and replacing it with a hyphen substitutes each matched capital letter with a hyphen; it does not automatically convert each original letter to its lowercase equivalent. If you replace with a fixed character, every match becomes that same character. This distinction prevents a common mistake: Find and Replace is not automatically a character-by-character case converter.

For a known capitalization error, search for the full text and write the desired spelling in Replace with. To change monday to Monday, find the exact word and enter its corrected form. For a whole passage, select that passage and use the Change Case command described below. These methods preserve the original letters more reliably than replacing every uppercase character with one fixed substitute.

Before choosing Replace All, consider whether a match might occur in a heading, footnote, table, or other place you did not intend to edit. If a passage is selected when you open Find and Replace, Word may search within that selection rather than the entire document, depending on the context and version. Check the search scope and the matches. Save a copy or use Undo promptly if a bulk replacement produces an unexpected result.

Change a Selection to Uppercase or Lowercase

To convert existing text rather than substitute it, select the relevant words or passage, then choose Home > Change Case (the Aa button) > lowercase, UPPERCASE, or another suitable option. The command changes the selected text’s capitalization while retaining the letters, unlike replacing every match with a single character. If you want to change an entire document, press Ctrl+A on Windows to select its contents, then use the same Change Case menu. Check headings, names, and abbreviations afterward, because a whole-document conversion affects those too.

Word also provides the Shift+F3 shortcut for cycling through capitalization choices for selected text. Depending on the selection and Word version, repeated presses cycle among lowercase, UPPERCASE, and Capitalize Each Word. The ribbon menu is clearer when you need a specific result. On a Mac, use the Home tab’s Change Case menu if available; keyboard shortcuts can differ with the keyboard, system settings, and Word version. In Word for the web, use the available Home-tab case controls or open the document in the desktop app for advanced Find and Replace options.

Change Case is a useful alternative when the goal is to make all text in a selection lowercase, but it is not a way to change only certain capital letters while leaving every other letter untouched. If only particular characters or terms should change, search for those exact items or use a carefully tested wildcard replacement.

Desktop Word, Mac, and Word for the Web

The steps above are written for Word for Microsoft 365 on Windows. Ctrl+H opens Replace there, and the More section in the Find and Replace dialog exposes options such as Match case and Use wildcards. The Home tab also offers Replace and Change Case, so the ribbon can be easier to follow if you do not use keyboard shortcuts.

Word for Mac has Find and Replace and a Change Case control, but shortcut behavior and dialog layout can differ from Windows. If a shortcut does not open the expected panel, use the Home tab’s Replace command and look for the search options in the dialog. Do not assume a Windows shortcut or dialog arrangement is identical on Mac.

Word for the web supports common text searches and replacements, but its controls do not provide every advanced desktop search option. In particular, if you cannot find Use wildcards or the specific advanced options described here, open the document in the desktop Word app. Availability and appearance can vary as Microsoft updates its applications, so use the ribbon command rather than relying on an unfamiliar shortcut.

Common Problems and Checks

Search finds both cases: Check that Match case is selected for an exact capitalization search. Without it, Word may treat uppercase and lowercase versions as equivalent.
The wildcard pattern is not working: Make sure Use wildcards is selected. A pattern such as [A-Z] is interpreted as a character range only in wildcard search; otherwise Word may search for the typed symbols literally.
Replace All changes too much: Use Find Next and Replace on a few examples first. Search for a full word or phrase when possible, rather than a single letter that may appear throughout the document.
The result has the wrong capitalization: Spell the replacement exactly as intended, or use Change Case on a selection. Do not expect a wildcard replacement with a fixed character to preserve each original letter in a different case.
Some letters are not found: [A-Z] covers the basic English alphabet. It does not represent every accented or non-English uppercase letter. For those, include the needed characters in a tested character set or search for the specific word.

Frequently Asked Questions

How do I find only uppercase words in Word?

In desktop Word, open Replace, select More > Use wildcards, and try <[A-Z]@> to find a word made of one or more uppercase English letters. Check individual matches with Find Next before using Replace All, because punctuation, acronyms, and document content can affect what you want to count as a word.

How do I find a word only when it starts with a capital letter?

For a known word, search for its exact spelling with Match case enabled. To search a broader pattern, use wildcards and test a pattern such as <[A-Z][a-z]@>, which describes a capital followed by one or more lowercase English letters. The wildcard pattern is not a perfect substitute for checking how a name or title is actually written.

Can Word turn every capital letter into lowercase with Find and Replace?

Find and Replace can locate uppercase characters with wildcards, but a fixed replacement changes each match to the same replacement text; it does not preserve each letter while automatically lowercasing it. Select the text and choose Home > Change Case > lowercase when the whole passage should be lowercase.

How do I replace one capitalized word throughout a document?

Press Ctrl+H on Windows, enter the existing spelling in Find what and the corrected spelling in Replace with, then enable Match case if capitalization must match exactly. Use Find Next to confirm the first result before selecting Replace All.

Why can’t I see Use wildcards?

Use wildcards is an advanced Find and Replace option in desktop Word. Expand More in the dialog, or open the document in the desktop app if you are using Word for the web and do not see the option. The web version has fewer advanced search controls.

Choosing the Safest Method

For one word with a known capitalization, use Find and Replace with Match case. For unknown uppercase characters, use the desktop wildcard pattern [A-Z] and inspect matches individually. For changing the case of a selected passage, use Home > Change Case. Choosing the method that matches the task—and checking a few results before making a document-wide edit—helps preserve correct names, acronyms, and sentence capitalization.

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