Case Converter - camelCase, snake_case, Title Case & More

Every programming language, framework, and style guide has opinions about how multi-word names should be written, and switching between those conventions by hand is tedious and error-prone. This case converter takes any input — a plain phrase, an existing identifier, a heading, a database column — breaks it into its component words, and instantly rebuilds it in ten widely used styles so you can copy exactly the one your context requires. The tokenizer is what makes the conversion reliable. It splits your input on spaces, underscores, hyphens, dots, and any other punctuation, and it also detects camelCase boundaries inside a single token, including runs of capitals such as acronyms. That means you can paste an identifier that is already in one convention and translate it directly into another without retyping: a JavaScript property becomes a Python variable, a CSS class becomes a React component name, a heading becomes a URL slug. Each output style has a real home. camelCase, with a lowercase first word, is the default for variables and functions in JavaScript, Java, and Swift. PascalCase capitalizes every word and is the convention for class names, React components, and C# types. snake_case joins lowercase words with underscores and dominates Python, Ruby, and SQL column names. kebab-case uses hyphens and is the standard for CSS classes, HTML attributes, npm package names, and URL slugs. CONSTANT_CASE — uppercase words joined by underscores — signals compile-time constants and environment variables. Title Case capitalizes each word for headlines and navigation labels, while Sentence case capitalizes only the first, matching most modern UX writing guidelines. Plain lowercase and UPPERCASE handle bulk reformatting, and dot.case appears in configuration keys, i18n message ids, and file names. Everything happens locally in your browser as you click — no network request, no server, no logging — so it is safe to convert internal identifiers, schema names, or unreleased product copy. The converter is also handy outside of code: writers use it to normalize headline capitalization, marketers to build consistent slugs, and data engineers to rename spreadsheet columns before import. A few limitations are worth knowing. The simple Title Case here capitalizes every word, whereas formal editorial title case leaves short articles and prepositions lowercase. Acronyms are normalized like ordinary words, so an all-caps abbreviation becomes lowercase inside snake or kebab output. And digits stick to the word they touch rather than forming separate words. For identifier work — the main job of a tool like this — those defaults are exactly what you want.