Text Case Converter
Transform any text into UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, or kebab-case in one click. Paste your text, choose a format, and copy the result instantly.
How to Use the Case Converter
Paste any amount of text into the input box, then click the button for the case format you need. The text is converted instantly and replaces your input — no second panel to scan. Click Copy Text to copy the result to your clipboard, or keep clicking different case buttons to compare formats. Use Clear to reset and start over. The tool handles single words, full paragraphs, code identifiers, and anything in between.
When to Use Each Text Case
- UPPERCASE — headings, legal emphasis, acronyms, constants in code.
- lowercase — data normalization, email addresses, SQL keywords.
- Title Case — document titles, book titles, proper nouns, UI headings.
- Sentence case — body copy, fixing accidental caps-lock, presentation slides.
- camelCase — JavaScript and TypeScript variable and function names.
- PascalCase — class names, React component names, C# types.
- snake_case — Python variables, database column names, file names in Linux.
- kebab-case — URL slugs, CSS class names, HTML data attributes, npm package names.
What Happens to Punctuation and Numbers?
UPPERCASE, lowercase, Title Case, and Sentence case preserve all spacing, punctuation, and numbers exactly as entered — only the letter casing changes. A sentence like "It's 9am — wake up!" will keep its apostrophe, dash, and exclamation mark intact. camelCase, PascalCase, snake_case, and kebab-case are programming formats that work on word boundaries: hyphens, underscores, and space characters become word separators, and punctuation is removed during word extraction. Numbers are treated as word characters and pass through attached to the nearest word.
Why Use a Browser-Based Case Converter?
Text pasted into web tools sometimes contains confidential information — draft emails, legal names, internal project identifiers. This case converter processes everything entirely inside your browser using JavaScript string methods. Nothing is transmitted to any server, nothing is logged, and the page works offline once it has loaded. There is no character limit — paste a 100,000-character document and the conversion is still instant. All case operations except the programming cases work correctly with non-Latin scripts, including Cyrillic, Greek, and accented Latin characters.