Text Case Converter — 7 Formats Instantly

Change text case instantly

Whether you need to convert text to uppercase for headings, lowercase for URLs, Title Case for titles, or camelCase/snake_case for code — this tool converts instantly. Supports 7 different case formats.

Text case conversion uses Unicode-aware string operations to transform characters. Simple transformations like uppercase and lowercase map each character individually. More complex cases like Title Case apply language-aware rules — for example, articles ('a', 'the') and prepositions ('in', 'of') are not capitalized in English title case unless they begin the phrase.

Common use cases include formatting headings for blog posts and articles (Title Case), normalizing user-submitted data in databases (lowercase), creating CSS class names from labels (kebab-case), converting between programming naming conventions (camelCase to snake_case), and fixing text that was accidentally typed with caps lock on.

When converting variable names between coding conventions, pay attention to word boundaries. Converting 'userAccountID' to snake_case should produce 'user_account_id', not 'user_account_i_d'. For titles, use Title Case rather than UPPERCASE — all-caps text is harder to read and can appear aggressive in digital communication.

Most text editors offer basic case conversion (uppercase/lowercase), but programming-specific formats like camelCase, snake_case, and kebab-case require dedicated tools or regex. This converter handles all common text cases in one place, including the programming-oriented formats that word processors don't support.