Case Converter
The case converter changes text to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case.
Characters that have no uppercase/lowercase form are left as they are, and only Latin letters are converted.
How to use
- Enter text — paste or type the text you want to convert into the input box.
- Pick a case style — click one of the UPPER, lower, Title, Sentence, camelCase, snake_case or kebab-case buttons.
- Copy results — the converted text appears in the output area; use the copy button to copy it.
Each case style explained
| Style | Description | Example output |
|---|---|---|
| UPPER | Every letter uppercase | HELLO WORLD |
| lower | Every letter lowercase | hello world |
| Title Case | First letter of each word capitalized | Hello World |
| Sentence case | First letter of the sentence capitalized | Hello world |
| camelCase | First word lowercase, later words capitalized, no spaces | helloWorld |
| snake_case | Lowercase joined with underscores | hello_world |
| kebab-case | Lowercase joined with hyphens | hello-world |
camelCase, snake_case and kebab-case are widely used in programming for variable, function and file names. Converting camelCase input to snake_case automatically inserts a separator at each word boundary (before an uppercase letter).
Frequently Asked Questions (FAQ)
How is Title Case different from Sentence case?
Title Case capitalizes the first letter of every word, while Sentence case capitalizes only the first letter of the sentence and the first letter after a period, question mark or exclamation point.
What are camelCase and snake_case?
camelCase keeps the first word lowercase and capitalizes the first letter of each following word with no spaces (myVariableName), while snake_case keeps every word lowercase and joins them with underscores (my_variable_name). Both are common for programming identifiers.
What happens to non-Latin characters?
Scripts without uppercase and lowercase (such as Korean or numbers) are left unchanged, and only Latin letters are converted. Mixed text is converted safely, touching only the alphabetic parts.
Is the text I convert sent anywhere?
No. Case conversion runs entirely in your browser, and the text you enter is never sent to or stored on a server.
Related tools & guides
- Word Counter — check characters and bytes before and after converting.
- Remove Duplicate Lines — sort a list and remove duplicates.
- URL Encoder / Decoder — safely place the converted string in a URL.
Last updated: 2026-06-25