What each case format does
- UPPERCASE and lowercase — force every letter up or down, leaving spacing and punctuation untouched.
- Title Case capitalizes the first letter of every word (
Hello World Example); Sentence case capitalizes only the first letter of each sentence (Hello world. Nice to meet you.). - camelCase and PascalCase join the words with no spaces — the first word lowercase for camel (
helloWorldExample), every word capitalized for Pascal (HelloWorldExample). - snake_case, kebab-case, and CONSTANT_CASE join the words with underscores or hyphens —
hello_world_example,hello-world-example, andHELLO_WORLD_EXAMPLE. - aLtErNaTiNg flips the case of every other letter for a playful, mocking-style effect.
How it works
Everything runs on your device as you type. The simple cases — UPPERCASE, lowercase, Title, and Sentence — transform your text in place, so all your spaces and punctuation stay exactly where they were.
The programmer cases (camel, Pascal, snake, kebab, CONSTANT) first split your text into words — breaking on spaces, underscores, hyphens, and existing camelCase boundaries — then rejoin them in the target style. That means you can pastehelloWorld, hello_world, or Hello World and convert between any of them cleanly.
Frequently asked questions
Is my text uploaded or saved anywhere?
No. The converter runs entirely in your browser. Your text is never sent to a server, logged, or stored — closing or reloading the page discards it.
Why does the result show a dash?
A dash (—) appears when the input box is empty or contains only spaces. Type or paste any text and the converted result updates instantly.
Can it convert camelCase or snake_case back to normal words?
Yes. The programmer cases detect word boundaries from spaces, underscores, hyphens, and camelCase humps, so
helloWorld or hello_world convert cleanly to Title Case, kebab-case, or any other format.What is the difference between snake_case, kebab-case, and CONSTANT_CASE?
All three join words with a single separator: snake_case uses underscores and stays lowercase, kebab-case uses hyphens and stays lowercase, and CONSTANT_CASE uses underscores but forces everything uppercase — the usual style for constants in code.
How is Title Case different from Sentence case?
Title Case capitalizes the first letter of every word, which suits headings and titles. Sentence case capitalizes only the first letter of each sentence and lowercases the rest, which reads naturally in prose.
Does it work with other languages and accented letters?
Yes. Uppercasing and lowercasing use your browser's built-in Unicode rules, so accented and non-Latin letters are handled the same way your operating system would.