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Case Convert

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About Case Convert

The Case Convert tool transforms your text between all common case formats instantly. Convert to UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and more with a single click.

This tool is essential for developers renaming variables, writers formatting titles, data analysts normalizing field names, and anyone cleaning up text from inconsistent sources.

Each case format serves a specific purpose: snake_case and CONSTANT_CASE are common in Python and configuration files, camelCase and PascalCase dominate JavaScript and Java, kebab-case is used in URLs and CSS classes, and Title Case is standard in English headings and titles.

Everything runs locally in your browser. No account, sign-up, or installation required.

How to Use Case Convert

  1. Paste your text into the input.

  2. Select the target case format from the options.

  3. The converted text appears instantly.

  4. Copy the result.

Examples

Example — To UPPERCASE
Input
hello world
Output
HELLO WORLD
Example — To camelCase
Input
my variable name
Output
myVariableName
Example — To snake_case
Input
My Variable Name
Output
my_variable_name
Example — To kebab-case
Input
My Page Title Here
Output
my-page-title-here
Example — To Title Case
Input
the quick brown fox jumps over the lazy dog
Output
The Quick Brown Fox Jumps Over the Lazy Dog

Frequently Asked Questions

What is the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (myVariableName). PascalCase starts with an uppercase letter (MyVariableName). Both capitalize the start of each subsequent word.

What is CONSTANT_CASE?

CONSTANT_CASE is UPPER_SNAKE_CASE — all uppercase letters separated by underscores. It is conventionally used for constants in Python, JavaScript, Java, and many other languages.

What is the difference between Title Case and Sentence case?

Title Case capitalizes the first letter of every major word. Sentence case capitalizes only the first letter of the first word and proper nouns.

Can I convert a snake_case variable to camelCase?

Yes — paste your snake_case text and select camelCase. Words separated by underscores will be joined with each subsequent word capitalized.

Can I convert a phrase to a URL slug (kebab-case)?

Yes — select kebab-case mode to convert 'My Page Title' to 'my-page-title', which is ideal for URLs and CSS class names.

Does Title Case handle small words like 'a', 'an', 'the'?

Yes — standard Title Case rules keep articles, prepositions, and conjunctions lowercase unless they are the first or last word.