What is the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (userName); PascalCase starts with a capital (UserName). Many languages use PascalCase for class names and camelCase for variables.

Why do URLs usually use kebab-case?

Hyphens are safe in URLs, easy to read, and treated as word separators by search engines, while underscores and capital letters are easier to mistype.

Is my text sent anywhere?

No. The conversion happens in your browser.

Developer Tool

Case Converter

Convert names between camelCase, snake_case, kebab-case, PascalCase and more.

Runs in your browser — nothing is uploaded

Names (one per line)

camelCase

userProfileId
httpServerError
maxRetryCount

PascalCase

UserProfileId
HttpServerError
MaxRetryCount

snake_case

user_profile_id
http_server_error
max_retry_count

kebab-case

user-profile-id
http-server-error
max-retry-count

CONSTANT_CASE

USER_PROFILE_ID
HTTP_SERVER_ERROR
MAX_RETRY_COUNT

Title Case

User Profile Id
Http Server Error
Max Retry Count

lower case

user profile id
http server error
max retry count

What this does

Different languages and tools expect different naming styles: JavaScript variables in camelCase, Python functions in snake_case, CSS classes and URLs in kebab-case, constants in CONSTANT_CASE. Renaming by hand is slow and easy to get subtly wrong, especially when moving data between a Python backend and a JavaScript frontend.

Paste a name or a list of names, one per line, and every style is shown at once.

How to use it

Paste text, one name per line if you have several.
Copy the style you need.

Where it stops being right

Words are split at spaces, underscores, hyphens and lowercase-to-uppercase boundaries. Runs of capitals such as HTTPServer are split as HTTP and Server, which is usually but not always what you want.
Title Case capitalises every word; it does not apply a style guide's rules about small words such as of and the.

Questions

What is the difference between camelCase and PascalCase?: camelCase starts with a lowercase letter (userName); PascalCase starts with a capital (UserName). Many languages use PascalCase for class names and camelCase for variables.
Why do URLs usually use kebab-case?: Hyphens are safe in URLs, easy to read, and treated as word separators by search engines, while underscores and capital letters are easier to mistype.
Is my text sent anywhere?: No. The conversion happens in your browser.

More developer tools

All developer tools →