Friendly Toolkit
MenuClose

Case Converter

Change the case of any text

Change text to UPPER, lower, Title, Sentence, camelCase, snake_case and more.

Free, private, no sign-up

Was this tool helpful?

Which case should I use?

  • Sentence case: only the first letter of each sentence is capital. Best for most writing and UI labels.
  • Title Case: major words are capitalised, and short words like "a", "of" and "the" stay lower case unless they come first or last. Use it for headlines and book titles.
  • Capitalized Case: every word starts with a capital letter.
  • camelCase and PascalCase: no spaces, each word capitalised (camelCase starts lower case). Common for code variables and class names.
  • snake_case, kebab-case, CONSTANT_CASE and dot.case: words joined by underscores, hyphens or dots. Used for file names, URLs, settings and constants.

Good to know

Does it work with accented letters and other languages?

Yes. Upper and lower case follow Unicode rules, so letters like é, ß and Greek or Cyrillic text convert correctly. Scripts without case, such as Hindi or Chinese, are left as they are.

Are line breaks kept?

Yes, for the writing cases (sentence, title, upper, lower). The code cases (camelCase, snake_case and so on) convert each line separately.

Is my text private?

Yes. Everything is converted in your browser. Your text is never uploaded or saved.