About the Case Converter
What is a case converter?
A case converter changes the capitalization — and the word-joining style — of your text. Paste a sentence and see it instantly as UPPERCASE, lowercase, Title Case, and the programmer-friendly styles like camelCase and snake_case, all at once. Instead of retyping or fixing capitalization by hand, you copy the version you need in one click.
Everything updates live as you type and runs entirely in your browser, so it's instant and your text is never uploaded.
The case styles explained
- UPPER CASE / lower case: every letter capital, or every letter small.
- Title Case: the first letter of every word is capitalized — great for headings.
- Sentence case: only the first letter of each sentence is capitalized, like normal prose.
- camelCase / PascalCase: words joined with no spaces; camelCase starts lowercase, PascalCase starts uppercase — common for variables and class names.
- snake_case / CONSTANT_CASE: words joined by underscores, lowercase or all-caps — used for variables, filenames and constants.
- kebab-case / dot.case: words joined by hyphens or dots — common in URLs, CSS classes and config keys.
- tOGGLE / aLtErNaTiNg: flip every letter's case, or alternate up and down — handy for a bit of fun.
Common Use Cases
- Writing: fix a heading that came out in all caps, or clean up shouty text.
- Coding: convert a label into a
camelCase variable or a kebab-case CSS class.
- Data cleanup: standardize the casing of a list of names or slugs.
- SEO & URLs: turn a title into a tidy hyphenated slug.
Need a URL slug specifically? Try the Slugify URL Generator. Cleaning up messy text? See the Text Cleaner.
Frequently Asked Questions
Is this case converter free?
Yes, completely. There's no sign-up, no limit, and no watermark — use it as much as you like.
What's the difference between Title Case and Sentence case?
Title Case capitalizes the first letter of every word (good for headings). Sentence case capitalizes only the first letter of each sentence, like ordinary writing.
Can it produce camelCase and snake_case from a sentence?
Yes. The tool splits your text into words — even recognizing existing camelCase or snake_case input — and rejoins them in whichever programming style you copy.
Does it work on my phone?
Yes. It's fully responsive, so the result cards stack neatly on small screens and every copy button still works.
Is my text uploaded anywhere?
No. All conversion happens locally in your browser with JavaScript, so your text never leaves your device.
