Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more — instantly.
A case converter rewrites your text in a different letter-casing style. Paste a phrase like “the quick brown fox” and it returns every common form at once: Title Case “The Quick Brown Fox”, Sentence case “The quick brown fox”, snake_case “the_quick_brown_fox”, and kebab-case “the-quick-brown-fox”, each with a copy button.
What each case means
Letter casing is about which letters are capitalized and how words are joined. UPPERCASE and lowercase simply set every letter high or low. Title Case capitalizes the first letter of every word; Sentence case capitalizes only the first letter of each sentence. The programming cases strip the spaces: camelCase and PascalCase join words with no separator, while snake_case and kebab-case lowercase the words and glue them with an underscore or a hyphen.
Each case with an example
The phrase “the quick brown fox” rendered in every supported case.
| Case | Rule | Example |
|---|---|---|
| UPPERCASE | Every letter capitalized | THE QUICK BROWN FOX |
| lowercase | Every letter lowercased | the quick brown fox |
| Title Case | First letter of each word | The Quick Brown Fox |
| Sentence case | First letter of each sentence | The quick brown fox |
| camelCase | No spaces, first word lower | theQuickBrownFox |
| PascalCase | No spaces, every word capitalized | TheQuickBrownFox |
| snake_case | Lower words joined by _ | the_quick_brown_fox |
| kebab-case | Lower words joined by - | the-quick-brown-fox |
- 1 Paste or type your text. Drop a word, a line, or a whole paragraph into the input box at the top.
- 2 Read the converted forms. Every case is generated at once and updates live as you edit — no button to press.
- 3 Copy the one you need. Each result has its own copy button; click it to put that exact form on your clipboard.
When to use each case
Headings and titles. Reach for Title Case for headlines and Sentence case for body sentences and UI labels. Filenames and URLs. snake_case and kebab-case avoid spaces, so they are safe in file names, slugs, and web addresses — kebab-case is the usual choice for URLs. Code. camelCase suits variables and functions in many languages, while PascalCase names classes, components, and types. Pick the convention your language or team already follows and stay consistent.