Change letter case in one click
Retyping text because it was written in the wrong case wastes time. Maybe a heading was typed with Caps Lock on, a list of names is all lowercase, or you need to turn a phrase into a variable name for code. This case converter handles all of it instantly, for writers, students, office workers and programmers.
How to use it
- Paste your text into the box.
- Click the case you want. The result appears below, and your original stays unchanged in the input box.
- Click Copy and paste the result where you need it.
Writing cases
| Case | Example | Typical use |
|---|---|---|
| UPPERCASE | THE QUICK BROWN FOX | Short headings, labels, acronyms |
| lowercase | the quick brown fox | Hashtags, email addresses, cleaning data |
| Title Case | The Quick Brown Fox Jumps Over the Lazy Dog | Headlines, book and article titles |
| Sentence case | The quick brown fox jumps. | Normal paragraphs, UI text, subject lines |
Our Title Case follows common style guides: small words such as "a", "and", "the", "of" and "in" stay lowercase unless they are the first word or follow a colon. Sentence case capitalises the first letter after each full stop, question mark or exclamation mark, and fixes a lone "i" to "I".
Programming cases
| Case | Example | Used in |
|---|---|---|
| camelCase | userFirstName | JavaScript and Java variables |
| PascalCase | UserFirstName | Class names, React components |
| snake_case | user_first_name | Python, databases |
| kebab-case | user-first-name | URLs, CSS classes, file names |
| CONSTANT_CASE | USER_FIRST_NAME | Constants, environment variables |
| dot.case | user.first.name | Config keys, translation keys |
Frequently asked questions
Does it work with accented letters?
Yes. Letters such as é, ü and ñ change case correctly. Scripts without case, like Devanagari, are left as they are.
Why are some short words not capitalised in Title Case?
Style guides keep articles, short conjunctions and prepositions lowercase in the middle of a title. Change them by hand if your guide differs.
How do I make a URL slug?
Kebab-case is close, but the Text to Slug tool also removes accents and symbols for clean URLs.