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Case Converter — camelCase, snake_case, Title Case & More

Type or paste text and see it in every case at once: UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case and dot.case.

Code cases (camelCase, snake_case…) convert each line separately, so you can paste a list of names.

Converted

  • UPPER CASE
  • lower case
  • Title Case
  • Sentence case
  • camelCase
  • PascalCase
  • snake_case
  • CONSTANT_CASE
  • kebab-case
  • dot.case
When should you use the Case Converter?
  • Renaming variables between languages (e.g. snake_case in Python to camelCase in JavaScript)
  • Turning a heading into a URL slug or CSS class name
  • Fixing text that was typed with Caps Lock on
How to use the Case Converter
  1. 1
    Paste your text
    Type a phrase or paste a list of names, one per line.
  2. 2
    See every case
    All conversions appear on the right as you type — no buttons to press.
  3. 3
    Copy the one you need
    Click Copy next to the style you want.
Examples
Mixed input to code styles
Input
userID from HTTPServer
Output
camelCase      userIdFromHttpServer
PascalCase     UserIdFromHttpServer
snake_case     user_id_from_http_server
CONSTANT_CASE  USER_ID_FROM_HTTP_SERVER
kebab-case     user-id-from-http-server
Title Case keeps small words lowercase
Input
the lord of the rings
Title Case
The Lord of the Rings
Common errors and how to fix them
Acronyms lose their capitals in Title Case
Title Case capitalises only the first letter of each word, so API becomes Api. Fix acronyms by hand after converting.
Punctuation disappears in camelCase or snake_case
Code cases keep only letters and numbers, because punctuation isn't allowed in most identifiers. Use UPPER, lower, Title or Sentence case to keep punctuation.
Related tools: Word Counter · Text Diff · Lorem Ipsum Generator
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Case Converter FAQ
camelCase joins words with no spaces, starting lowercase and capitalising each following word: userAccountId. It's the usual style for variables and functions in JavaScript, Java and many other languages.
PascalCase capitalises the first word too: UserAccountId. It's commonly used for class names, React components and TypeScript types.
snake_case (user_account_id) is standard in Python, Ruby and database column names. kebab-case (user-account-id) is used in URLs, CSS class names and file names. CONSTANT_CASE is used for constants and environment variables.
Small words such as a, an, the, and, of, in and to stay lowercase unless they are the first or last word, following common headline style: The Lord of the Rings.
Yes. Paste one name per line — the programming cases (camelCase, PascalCase, snake_case, CONSTANT_CASE, kebab-case and dot.case) convert each line separately.
The converter splits on spaces, punctuation, underscores, hyphens and case changes, so userID becomes user + ID and HTTPServer becomes HTTP + Server before converting.