Case Converter
Transform text casing instantly.
Transform text casing instantly.
Convert text between uppercase, lowercase, title case, sentence case, and alternating case instantly. This free, browser-based case conversion tool handles any text up to 5,000 characters with a single click. No account or software installation needed.
The Case Converter is a text formatting tool that transforms written content between five common letter case styles. Uppercase converts all letters to capitals, lowercase makes everything small, title case capitalizes the first letter of each word, sentence case capitalizes only the first letter after sentence-ending punctuation, and alternating case creates a playful pattern of mixed capitals and lowercase letters. It is an essential utility for writers, developers, and content managers who need to quickly reformat text without manually retyping. All processing happens in your browser with no data sent to any server.
Paste or type your text into the Input field. Click any of the five conversion buttons — UPPERCASE, lowercase, Title Case, Sentence case, or aLtErNaTiNg — to instantly transform your text. The converted result appears in the Output field below. Click "Copy" to place the result on your clipboard, ready to paste into your document, email, or code editor. You can apply different conversions to the same input text repeatedly to compare formatting options before settling on the right style.