Case Converter

đź’ˇ Student Tip: Writing an assignment? Paste your text, click Clean Text to fix messy spacing and line breaks in one go, then pick Title Case for your headings. Use Find & Replace to fix a repeated spelling mistake everywhere at once.

Convert any text between UPPERCASE, lowercase, Title Case, Sentence case and more — instantly, in your browser. Paste your text or upload a file, pick a case, and copy or download the result. No signup, no fees, and your text never leaves your device.

Accidentally typed a whole paragraph with Caps Lock on? Need every heading in Title Case, or a product description in clean sentence case? Fixing letter case by hand is slow and error-prone. This free case converter does it in one click — for a single word, a headline, or a full document of up to 3,000 characters at a time.

What Is a Case Converter?

A case converter is a simple online tool that changes the capitalization of your text. It can turn capital letters into small letters, small letters into capitals, or reformat a whole sentence into a standard style like Title Case — without you retyping a single character.

People use a text case converter every day for school assignments, blog posts, social media captions, product listings, email subject lines and code. Writers use it to keep headings consistent, students use it to fix capitalization mistakes, and developers use it to rename variables between camelCase, snake_case and kebab-case.

Every Case You Can Convert

Type or paste your text once, then switch between all of these styles with one click:

  • UPPERCASE — EVERY LETTER BECOMES A CAPITAL. Best for headings, warnings and emphasis.
  • lowercase — every letter becomes small. Perfect for fixing text typed in ALL CAPS by mistake.
  • Title Case — The First Letter Of Every Main Word Is Capitalized. The standard style for headlines, book titles and video titles.
  • Sentence case — Only the first letter of each sentence is capitalized, just like normal writing. Ideal for paragraphs and descriptions.
  • Capitalized Case — The First Letter Of Every Word Is Capitalized, Including Small Words Like “the” and “and”.
  • aLtErNaTiNg CaSe — letters take turns being small and capital. Popular for playful social media posts.
  • iNVERSE cASE — the opposite of the original: capitals become small and small letters become capitals.
  • camelCase — first word small, every next word capitalized, no spaces. Used for JavaScript and Java variables.
  • PascalCase — like camelCase, but the first word is capitalized too. Used for class names in programming.
  • snake_case — words joined by underscores. Common in Python, databases and file names.
  • kebab-case — words joined by hyphens. Common in URLs and CSS class names.
  • dot.case — words joined by dots, used in some code and configuration files.

The tool also includes four handy extras: Remove Spaces, Reverse Text, Remove Emoji and Remove HTML — plus a Find & Replace box and a live counter that shows your words, characters and sentences as you type.

How to Change the Case of Your Text

Step 1 — Type or paste your text into the box above, or click Upload File to load a TXT, PDF, Word, Excel or CSV file (up to 3,000 characters).

Step 2 — Click the case you want: UPPERCASE, lowercase, Title Case, Sentence case, or any of the other styles.

Step 3 — Copy the result with one click, or download it as a TXT, PDF, Word or Excel file. Done — that is all there is to it.

Capitalize My Title: The Title Case Rules

One of the most common questions people ask is: which words do I capitalize in a title? Here are the simple rules used by most style guides:

  • Always capitalize the first word and the last word of the title.
  • Capitalize all main words: nouns (book, city), verbs (run, is, are), adjectives (big, happy) and adverbs (quickly, very).
  • Do NOT capitalize small joining words in the middle of a title: articles (a, an, the), coordinating conjunctions (and, but, or, for, nor), and short prepositions (in, on, at, of, to, by, up).
  • Longer prepositions (with, from, over, between) are capitalized in some styles — Chicago and APA capitalize words of four letters or more, so “with” and “from” become With and From. AP style keeps them small unless they are the first or last word.
  • When in doubt, paste your title into the Title Case option above — the converter applies these rules for you automatically.

Examples: “a guide to the best cities in the world” becomes “A Guide to the Best Cities in the World”. “the lion, the witch and the wardrobe” becomes “The Lion, the Witch and the Wardrobe”.

Title Case vs Sentence Case: What Is the Difference?

Title Case capitalizes the first letter of every main word: “How to Bake a Chocolate Cake at Home”. Sentence case capitalizes only the first letter of the whole sentence (and names): “How to bake a chocolate cake at home”. Most style guides (APA, Chicago, MLA) ask for Title Case in headings and sentence case in regular paragraphs and descriptions.

For a book or video title, use Title Case. For a meta description, a product description or a plain paragraph, use sentence case. The converter above lets you switch between the two in one click.

Why Use This Case Converter?

  • Completely free — no signup, no account, no watermarks.
  • Works with files — upload PDF, Word, Excel, CSV or TXT files and download the converted result in four formats.
  • Private by design — conversion happens in your browser, so your text is never uploaded to a server.
  • Works on any device — phone, tablet or computer, with nothing to install.
  • More than case — word, character and sentence counts, Find & Replace, and text-cleaning tools in the same place.

Frequently Asked Questions

How do I convert text to UPPERCASE or lowercase?

Paste your text into the box, then click UPPER CASE or lower case. Your text changes instantly, and you can copy it or download it as a file.

What words are not capitalized in a title?

In Title Case, you normally do not capitalize articles (a, an, the), short prepositions (in, on, at, of, to) and joining words (and, but, or) — unless one of them is the very first or last word of the title.

Is “with” capitalized in a title?

It depends on the style. Chicago and APA capitalize words with four or more letters, so “With” is capitalized. AP style keeps “with” small in the middle of a title. Our Title Case converter follows the common four-letter rule.

What is the difference between Title Case and Capitalized Case?

Capitalized Case capitalizes the first letter of every single word, including small words like “the” and “and”. Title Case is smarter — it leaves those small joining words in lowercase in the middle of a title.

Can I convert the case of a whole file?

Yes. Click Upload File and choose a TXT, PDF, Word, Excel or CSV file. The text is extracted automatically (up to 3,000 characters), ready to convert and download.

Is this case converter free?

Yes — 100% free, with no signup and no limits on how often you use it.

Does the tool save or store my text?

No. Everything runs inside your browser. Your text never reaches our server, so anything you paste stays on your own device.

Which case should I use for a headline?

Title Case is the most common choice for English headlines and titles. If your website or teacher uses a style guide, follow that — otherwise Title Case is a safe, professional default.

Need more free tools? Convert secret messages with our Morse Code Translator, or turn text into 0s and 1s with the Binary Translator — all free, all in your browser.

From Our Blog: Learn More About Text Case

Try the dedicated Title Case Converter →

More dedicated converters: Uppercase Converter → · Lowercase Converter → · Sentence Case Converter → · Convert Case → · Capital Letters → · Remove Line Breaks → · Remove Spaces → · Remove Emojis → · Strip HTML →