Our Case Converter transforms any block of text between UPPERCASE, lowercase, Title Case, Sentence case, aLtErNaTiNg case, camelCase, PascalCase, snake_case, and kebab-case in a single click. It uses Unicode-aware transformations so accented characters (é, ñ, ö), Turkish dotted/dotless i, German ß, and non-Latin scripts are handled correctly instead of being corrupted like they are in many older converters. Everything runs client-side, so pasted contracts, drafts, or code stay on your device. Title Case follows the AP style rule: it capitalises the first and last words plus any word four letters or longer, and keeps short articles/prepositions (a, an, the, of, in, on, for) lowercase — unless they are the first word. Sentence case detects `.`, `!`, `?` boundaries and re-capitalises only after them, which is useful when you paste text that came from an all-caps PDF or a screaming email subject. The tool preserves original whitespace, line breaks, and paragraph structure — only the letter casing changes.
Free, fast, and runs entirely in your browser — no signup, no upload to a server.