Text Case Converter

What a case converter is for

Retyping a heading you accidentally left in ALL CAPS, or fixing a name that came out in lowercase, is tedious and error-prone. This tool rewrites your text into a chosen case in one click, so you can paste it back where it belongs. It handles the everyday cases — UPPERCASE, lowercase, Title Case and Sentence case — plus the programmer-style formats camelCase, snake_case and kebab-case.

When you'd actually use it

Writers use Title Case to clean up headlines and Sentence case to tame a paragraph that arrived shouting in capitals. Developers lean on the other three: camelCase for JavaScript variables (userFirstName), snake_case for Python and database columns (user_first_name), and kebab-case for URL slugs, CSS classes and file names (user-first-name). A common real-world job is turning a spreadsheet column header like "First Name" into a clean field name — this converter does that instantly instead of you deleting spaces by hand.

A quick worked example

Type hello world example and you'll get HELLO WORLD EXAMPLE (upper), Hello World Example (title), helloWorldExample (camel), hello_world_example (snake) and hello-world-example (kebab). Notice that the three code formats strip the spaces and join the words — that's the whole point of them.

How to use it

1. Paste or type your text into the input box.
2. Click the case you want — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case or kebab-case.
3. Read the converted result in the output area, adjusting your choice if a different format fits better.
4. Copy the result and paste it wherever you need it.

FAQ

What's the difference between Title Case and Sentence case?

Title Case capitalizes the first letter of every word ("The Quick Brown Fox"), which suits headings. Sentence case capitalizes only the first word and any proper nouns ("The quick brown fox"), which suits normal prose.

Does it keep my numbers and punctuation?

Yes. Digits, punctuation and symbols pass through unchanged. Only letters are re-cased, and for camel, snake and kebab the spaces between words are converted into the joining style.

Is my text private?

It never leaves your device — the conversion runs entirely in your browser, with nothing uploaded or stored.

Is it free?

Completely. The tool is free and supported by the ads on the page, with no sign-up or limit on how much text you convert.