Case Converter – Change Text Case Online

A case converter changes the capitalisation of text. It can turn a block of text into capital letters, small letters, title case or a programming style such as camelCase or snake_case, so you do not have to retype it.

Paste your text into the box and click the case you want, for example UPPER CASE or Title Case. The text in the box changes right away. Click Copy to use it or Download to save it as a text file.

It supports UPPER CASE, lower case, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case, aLtErNaTiNg case and iNVERSE case.

Title case capitalises the first letter of every word, as in Word Counter For Essays. Sentence case capitalises only the first letter of each sentence, as in Word counter for essays. Sentence case is common in body text and many modern headings.

In camelCase the first word is lowercase and every later word starts with a capital letter, as in userAccountName. It is widely used for variable and function names in JavaScript, Java and many other languages.

PascalCase capitalises the first letter of every word including the first, as in UserAccountName. It is typically used for class names and component names, while camelCase is used for variables and functions.

snake_case joins lowercase words with underscores and is common in Python, Ruby and database column names. kebab-case joins them with hyphens and is common in URLs, file names and CSS class names.

CONSTANT_CASE writes every letter in capitals and joins words with underscores, as in MAX_RETRY_COUNT. It is the usual style for constants and environment variable names.

Yes. The programming cases such as camelCase, snake_case and kebab-case are applied to each line separately, so you can convert a whole list of names in one go.

Yes. Each conversion is saved, and the Undo button steps back through up to 20 changes, so you can try several cases and return to your original text.

No. Conversion runs in your browser, so your text is never sent to a server or stored.

Yes. It is free with no sign-up and no limits, and it works on phones, tablets and desktop browsers.