Case Converter — Free Online Tool

The Case Converter switches text between UPPERCASE, lowercase, Title Case, Sentence case, and developer-oriented forms like camelCase, snake_case, and kebab-case, in one paste-and-click rather than retyping. It is the fastest fix for a block of text that arrived in the wrong shape — a headline someone typed in all caps, a spreadsheet column of names in inconsistent capitalisation, or a list of labels that needs to become variable names.

Title Case is the case that has actual rules rather than a mechanical transformation, and the rules differ by style guide: most keep short articles, conjunctions, and prepositions lowercase unless they are the first or last word, which is why a naive capitalise-every-word conversion produces headlines like "The Best Way To Do It" that read subtly wrong to an editor. If you specifically need APA, MLA, or Chicago title case, the dedicated Title Case Converter applies those rules properly.

The programming cases exist for a different reason: converting a human-readable label such as "User Profile Image" into userProfileImage, user_profile_image, or user-profile-image saves a surprising amount of manual retyping when you are generating variable names, database columns, CSS classes, or URL slugs from a list of copy.

All conversions happen instantly in your browser — nothing is uploaded, and long documents are handled as easily as a single headline.

Our Case Converter is completely free to use with no signup required. For this tool, processing runs in your browser — your files and data stay on your device and are not uploaded to our servers.

Whether you are a developer, designer, student, or business owner, this tool is designed to save you time and make your workflow more efficient. Bookmark this page to access it whenever you need it — it will always be free.