Capitalize Each Word

Title Case, Proper Case, and First-Word Capitalization

Capitalization rules in English are not uniform — they depend on the context, style guide, and type of content being formatted. Headings, titles, product names, and labels each follow different conventions. This tool gives you instant access to three common capitalization modes: capitalizing every word without exception, applying proper case with smart exceptions for articles and prepositions, and capitalizing only the first word of each sentence. For a full reference of when and why specific words are capitalized, see our English capitalization rules guide. For broader text case conversion including uppercase, lowercase, and toggle case, use the uppercase to lowercase converter.

How Word Capitalization Works

The instant capitalizer reads your text word by word and transforms the first character of each word to its uppercase equivalent while setting the remaining characters to lowercase. For the "capitalize every word" mode, this transformation applies unconditionally to all words. For proper case mode, a list of common exception words — articles, coordinating conjunctions, and short prepositions — is checked before each word is processed. The first word of the text always receives a capital letter regardless of exception status. Sentence mode applies a different strategy: it lowercases everything first and then uppercases only the first letter after a sentence-ending punctuation mark or at the very start of the text.

Proper Case vs Title Case

The terms "proper case" and "title case" are often used interchangeably but they describe different conventions. Title case in its simplest form means capitalizing every word, which is what the "capitalize every word" mode produces. Proper case is more nuanced — it follows the convention that minor words such as "a", "an", "the", "and", "or", "in", and "of" remain lowercase unless they are the first word of the title. This proper case convention is used in most English-language style guides including APA and Chicago. The AI mode on this tool extends this further with support for both APA and Chicago rules, which differ slightly in how they handle prepositions and conjunctions of different lengths. To check the grammar of your capitalized text, use the grammar checker.

Paste and Capitalize Every Word Instantly

The instant mode processes your text entirely in your browser — no network request, no delay. Paste any amount of text, choose a mode, and click Capitalize Now. The result appears immediately below the form with a copy button. This is ideal for quick formatting jobs where you need a consistent result without ambiguity. For text that has unusual capitalization patterns, brand names, or style-specific requirements, switch to the AI tab in the left panel, which uses context awareness to apply the correct capitalization. For rewriting the content itself after formatting, the content rewriter or article rewriter can help.

How to use the tool

Capitalization Modes

Three instant modes are available. "Capitalize every word" is the most aggressive — every word gets a capital first letter, with no exceptions. This produces what is commonly called "all-word title case" and is suitable for bold headlines, product names, and labels where you want maximum visual weight. "Proper case (smart exceptions)" is the style-guide-appropriate version — it follows the widely accepted rule that short function words remain lowercase unless they open a sentence. "First word per sentence" produces standard sentence case, which is the correct capitalization for body paragraphs, descriptions, captions, and most content outside of headings. The AI tab extends these options with APA-style, Chicago-style, and smart-fix modes for more demanding formatting requirements.

Formatting Headlines, Product Names, and Lists

Consistent capitalization is especially important in user-facing content such as headlines, navigation labels, product names, button text, and category headings. Inconsistencies in capitalization make content look unprofessional and are easy to miss when editing manually across large amounts of text. This tool lets you paste a batch of headlines or product names, apply a consistent mode, and get uniformly capitalized output in one operation. For generating title text with AI, the AI title generator and blog title generator can create formatted titles from scratch.

Formatting Names and Titles

Proper nouns — person names, company names, place names, and book titles — should always have their principal words capitalized. When these names arrive from database exports, form submissions, or copy-pasted sources, they are often all lowercase or all uppercase. Pasting them into this tool with "capitalize every word" mode quickly restores proper capitalization. For a list of product names, employee names, or city names, the output will be consistently capitalized for use in a spreadsheet, CMS, or API payload. After capitalizing names, the AI text analyzer can review the full text for other formatting and readability issues.

Fixing Lowercase Text

Text copied from legacy systems, data exports, and some web forms often arrives in all lowercase. Titles, labels, and content fields that should have capitalized words look unprofessional when left in lowercase. This tool corrects that in a single click. It is also useful when text has been converted to lowercase for processing purposes — such as for database normalization or search indexing — and needs to be converted back to a human-readable capitalized format before display. For fixing case issues specifically from all-caps or caps-lock text, the uppercase lowercase converter handles all direction conversions.

Preparing Headers and Labels

Navigation menus, button labels, column headers, and category names all benefit from consistent capitalization. Style guides for web applications and design systems frequently specify title case for these elements to distinguish them visually from body text. Using this tool ensures every label in a batch follows the same rule. Paste a list of menu items or headers, one per line, and apply the mode. Each item will be capitalized consistently. For further processing, the paragraph to lines tool can split your capitalized text into individual lines for copy-pasting into a list editor or spreadsheet.

Smart Exceptions — Skipping Articles and Prepositions

Style guides for formal writing — particularly in academic, journalistic, and publishing contexts — specify that certain short words should remain lowercase in titles and headings unless they appear at the very start. These exceptions prevent headings from looking like a sequence of equal-weight words and preserve natural language rhythm. The proper case mode in this tool applies a built-in exception list covering the most common function words. For content that must strictly conform to a specific style guide, the AI mode offers dedicated APA and Chicago implementations that apply the authoritative rules for each standard. For academic text, the citation generator and APA title page generator handle additional formatting requirements.

Capitalizing All Words

The "capitalize every word" mode applies a capital letter to the first character of every space-separated token, with no exceptions. This is the most straightforward and predictable transformation. It is the correct choice for brand names that do not follow standard style-guide rules, for certain headline formats in advertising, and for any situation where visual consistency across all words is more important than following formal grammar conventions. It is also the easiest mode to undo, since the transformation is purely mechanical and reversible by switching to lowercase.

Smart Proper Case

The proper case mode checks each word against a built-in exception list before applying the capital letter. Words on the exception list — including articles (a, an, the), coordinating conjunctions (and, but, or, nor, for, yet, so), and common prepositions (in, on, at, to, of, with, by, from, into, over, via) — are left in lowercase unless they are the first word of the input. This follows the most widely cited convention for title case in English. The result reads more naturally than all-word title case and is the correct format for book titles, article headings, and section titles in formal documents. For email or professional writing where proper names must be capitalized correctly, the email writer generator handles composition with correct formatting built in.

Sentence Capitalization

Sentence capitalization is the standard format for body text in English: the first word of each sentence is capitalized, and all other words remain lowercase unless they are proper nouns. This mode first lowercases the entire input, then finds each sentence boundary — the start of the text and every occurrence of a period, exclamation mark, or question mark followed by whitespace — and capitalizes the first letter at that position. The result is correctly formatted sentence case text suitable for paragraphs, descriptions, social media captions, and any content where all-word capitalization would be inappropriate. For generating social media content with correct formatting, the Facebook post generator produces ready-to-use content.

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