Change the case of your text
Paste your text, upload a file, or load the example. Fourteen conversions previewed at once, title case in all four style guides, and a clean-up pass for what pasting drags in.
Fourteen conversions, all previewed at once, so you pick by looking rather than by guessing — and then the part every other case converter gets wrong. There is no such thing as “title case”: there are four style guides and they disagree. This runs all four side by side and marks the words where they part company. Free, no sign-up, nothing leaves your browser.
Paste, look, apply.
Type, paste, or drop a .docx, .pdf or .txt file onto the editor. Files are read in your browser; nothing is uploaded.
All fourteen conversions show you what they would do to your actual text. No applying something to find out what it was.
Apply changes the editor and Ctrl+Z puts it back. Copy takes the converted text and leaves your original alone.
Four style guides, four definitions of which words stay down. The rule that separates them is almost entirely about length.
| Style guide | Which words stay lower case | Used for |
|---|---|---|
| Chicago | Articles, coordinating conjunctions and prepositions — any length. So with, about, over, without, between all stay down | Books, essays, most academic publishing |
| MLA (9th ed.) | The same as Chicago: prepositions stay down regardless of length | The humanities |
| AP | The same words, but only when they are three letters or fewer. With, From, Over, Into go up | News, blogs, marketing copy |
| APA (7th ed.) | Also three letters or fewer, so it lines up with AP on prepositions | Papers in the social sciences |
All four agree on the rest: capitalise the first and last word whatever it is, start a new title after a colon, and capitalise both halves of a hyphenated compound. All four leave a word alone when it already carries a capital inside it, so iPhone, eBay, McDonald and PhD survive a pass unchanged.
A real run, recorded on 26 September 2026. One ordinary headline, twelve words, and the four guides disagree about three of them.
Typed entirely in lower case, the way a headline usually arrives in a draft.
Twelve words. Three of them — about, with, over — are prepositions of four letters or more, which is precisely where the guides split.
Three words out of twelve, from one rule about length. That is the difference between a newsroom headline and a book title, and it is why a tool with a single Title Case button is silently right about half the time. And for comparison: Capitalise Every Word gives A Short Guide To Talking About Pay With Your Manager Over Coffee — that capital To is what no style guide anywhere would write.
Grouped by the job rather than listed alphabetically, because the reason you want one is usually the fastest way to find it.
Text that needs its case fixed has almost always been pasted from somewhere, and pasting brings passengers.
Non-breaking spaces, zero-width spaces, soft hyphens and direction marks come with text from Word, Google Docs, PDFs and web pages. They take up no room on screen, count against every character limit, and break exact-match search and sorting. The Clean up tab names each one with its code point and removes them.
Curly quotes and apostrophes, en and em dashes, the ellipsis character. Correct in prose a person reads; wrong in a form field, a CSV, a filename or a code editor. Straightening them is a conversion for a destination rather than an improvement, which is why it is a button and not automatic.
Double spaces after full stops, trailing spaces at the end of lines, three blank lines between paragraphs, hard line breaks in the middle of sentences from an email or a PDF. Each has its own button, each shows how many characters it would change, and each is disabled when there is nothing to do.
Three jobs, one paste.
Headlines, subheadings and a house style to keep. Seeing all four guides at once is faster than remembering which one this publication uses, and the disagreement table tells you exactly which words to check when you are copy-editing somebody else’s headline into your style.
Seven identifier conventions from one paste, which is the whole job when you are turning a spec, a spreadsheet column list or a field name into code. Straightening smart quotes matters here too — a curly apostrophe in a string literal is a bug that looks like nothing.
A form filled in with Caps Lock on, a spreadsheet of names in capitals, a chunk of text pasted out of a PDF with a line break every seventy characters. Lower it, sentence-case it, strip the breaks, clean the invisible characters — then read it through, because no tool knows which words are names.
Six pages, six different questions. They share one engine, so the numbers always agree.
How much did I write? Words, characters, reading time, readability and keyword frequency, with these four case buttons in its toolbar as a convenience.
What are these characters? Four totals that disagree and are all correct, a breakdown by kind, and the invisible characters that arrive with pasted text. The page to open when a count looks wrong.
How hard is it to read? Six formulas and every sentence graded, so you can see which ones to open.
What people ask about changing the case of text.
Paste it into the box above and press Apply on lower case. Every conversion is previewed before you commit to it, and applying one is an ordinary edit, so Ctrl+Z puts your original back. If the text arrived in capitals and you want readable prose rather than all-lowercase, use Sentence case instead.
Capitalising the important words in a heading and leaving the small ones down. The complication is that there is no single rule: Chicago, AP, APA and MLA each define small differently, so the same headline comes out differently in each. This tool runs all four and marks the words where they disagree, rather than picking one and calling it title case.
Length. Both send articles, coordinating conjunctions and prepositions down. Chicago does it regardless of how long the preposition is, so with, about, over and without all stay lower case. AP only does it for words of three letters or fewer, so those four go up. In the example this page walks through, that one rule is the entire difference between the two — three words out of twelve.
Whichever your publication, course or client specifies. If nobody has: Chicago or MLA for books, essays and academic work; AP for news, blogs and marketing copy; APA for papers in the social sciences. Consistency across your own pages matters more than the choice.
One capital at the start of each sentence, and on the word I, with everything else lower case unless it is a name. It is what prose looks like, and it is increasingly the house style for headings too because it reads faster than title case. This tool leaves short ALL-CAPS words alone by default so NASA does not become Nasa — there is a switch if you want them lowered.
Only partly, and it says so rather than pretending. Sentence case leaves a word alone if it already carries a capital inside it — iPhone, eBay, McDonald, PhD — and it leaves short ALL-CAPS words alone. What it cannot do is know that paris is a city, because no rule about letters can tell you that. Text that arrived entirely in capitals will always need a read-through afterwards.
Because every style guide keeps some words down. Capitalising every word gives you A Short Guide To Talking About Pay, and no guide capitalises that To. It is a genuinely useful conversion for lists, labels and column headings — it just is not what anyone means by title case.
Code, mostly. camelCase for JavaScript variables and JSON keys, PascalCase for class names, snake_case for Python and SQL columns, kebab-case for URL slugs, CSS classes and HTML attributes, CONSTANT_CASE for environment variables, dot.case for config keys, and Train-Case for HTTP header names. All seven strip the punctuation and rebuild the words, so a sentence goes in and an identifier comes out.
Yes. Every conversion has a Copy button beside its Apply button. Copy puts the converted text on your clipboard and leaves your editor exactly as it was, which is what you want when the conversion is going somewhere else.
Turn off Leave short ALL-CAPS words alone first, then apply Sentence case. That lowers everything and puts a capital back at the start of each sentence. Names will need fixing by hand afterwards — there is no rule about letters that can tell a city from a verb.
Because you pasted it. Word, Google Docs, PDFs and web pages all carry non-breaking spaces, zero-width spaces, soft hyphens and direction marks, and none of them show up on screen. They count against character limits and they break exact-match search and sorting. The Clean up tab lists what it found, with the code point, and removes them.
Turns curly quotation marks and apostrophes into straight ASCII ones, en and em dashes into hyphens, and the ellipsis character into three full stops. That is usually what a form field, a code editor, a CSV or an older system wants. For prose that a person will read, the curly versions are the correct ones — so this is a conversion for a destination, not an improvement.
Yes, with no sign-up and nothing held back for a paid plan. Changing case is string handling done in your browser, so it costs us nothing to serve and there is no reason to meter it.
No. Every conversion runs in your browser and no part of this tool sends your text anywhere. Your draft is kept in your own browser storage so a refresh does not lose it, and clearing your browser data removes it.
The Word Counter has four case buttons in its toolbar as a convenience while you are counting. This page is the tool: fourteen conversions previewed side by side before you commit, four title-case style guides run at once with their disagreements marked, copy-without-applying on every one, and a clean-up pass for what pasting drags in. If changing the case is the job, start here.
Changing the case is one job. These are the others.
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