How In-Browser Text Case Conversion Works
Text Case Converter & Capitalizer runs entirely in your browser with JavaScript. There is no sign-up, and whatever you type or open here is processed on your device instead of being sent to a server.
Transform Text Case Formats Instantly in Browser Memory
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case and kebab-case. All string transformations execute directly inside your browser memory, keeping your documents and proprietary code variables private.
How Title Case and Sentence Case Work
Sentence case capitalizes the first letter after a full stop, question mark or exclamation mark, plus the pronoun 'I', but lowercases everything else, so you have to re-capitalize names such as London by hand. Title Case keeps a fixed list of short words (a, an, the, and, of, in, on, to and similar) in lowercase unless they start or end a line or follow a colon. Longer prepositions such as 'between' get a capital. Title Case and Sentence case lowercase the rest of every word first, so acronyms such as NASA become Nasa and brand names such as iPhone become Iphone. Check names, brands and acronyms after converting.
Developer-Ready Casing for Programming
Quickly reformat database column names and variables between camelCase, snake_case and kebab-case. Words are split at spaces, punctuation and capital letters, so 'userID' becomes 'user_id'.
Why processing in your browser matters
Many online tools upload your files or text to a server to process them. This one does the work on your computer or phone, so your data is not sent to us or stored anywhere else. That lowers the risk when you work with confidential material, although you should still follow your organisation's own rules. Read how this works in our Privacy Policy.
- No uploads: files are opened and saved on your device, so there is no upload or download wait.
- No account: nothing to sign up for or install.
- Free to use: no subscriptions or paywalls.