Paste any text and click a button to change its letter case. The converted text replaces what is in the box, so you can chain conversions and copy the result with one click.
Which case should I use?
- Title Case capitalises the main words – good for headlines and headings. Short words like “and”, “of” and “the” stay lowercase unless they start the title.
- Sentence case capitalises only the first letter of each sentence – the most readable choice for body text and UI labels.
- camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE are naming styles used in programming for variables, classes, files and URLs.
Questions
How do I fix text typed with caps lock on?
Click “Sentence case” to turn it back into normal text, or “iNVERSE” to flip every letter.
Does it work with accented letters?
Yes, upper and lower case conversion uses Unicode rules, so letters like é, ß and ø are handled.
Is there a length limit?
No practical limit – it can convert whole documents instantly in your browser.