Dev Tool

String Case Converter

Convert text between any case format instantly. Paste your text and all conversions update in real time.

🔤 Input Text 0 words · 0 chars

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Instant conversion

All case formats update in real time as you type — no button needed.

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One-click copy

Click Copy next to any format to copy it to clipboard instantly.

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10+ formats

camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case and more.

Frequently Asked Questions

What case formats are supported?

Camel case, Pascal case, snake_case, kebab-case, UPPER_CASE, Title Case, sentence case and more.

What is camelCase used for?

camelCase is the standard naming convention in JavaScript, Java and many other programming languages for variable and function names.

What is camelCase?

camelCase starts with a lowercase letter and capitalises the first letter of each subsequent word, with no spaces or separators. Example: helloWorldFooBar. Used in JavaScript variables, JSON keys and most modern programming languages.

What is snake_case?

snake_case uses all lowercase letters with underscores between words. Example: hello_world_foo_bar. Used in Python variables, database column names, Ruby and many file naming conventions.

What is kebab-case?

kebab-case uses all lowercase letters with hyphens between words. Example: hello-world-foo-bar. Used in CSS class names, HTML attributes, URL slugs and many CLI tool options.

Naming conventions explained

Programming languages, file systems and URLs each have their own way of joining words. This converter switches text between camelCase, PascalCase, snake_case, kebab-case, UPPER CASE, Title Case and more, which saves time when renaming variables, database columns or headings.

Where each style is used

camelCase (userName): variables and functions in JavaScript, Java and Swift.
PascalCase (UserName): class names and React components.
snake_case (user_name): Python, Ruby and most database column names.
SCREAMING_SNAKE_CASE (MAX_RETRIES): constants and environment variables.
kebab-case (user-name): URLs, CSS classes and file names.
Title Case for English headings. Sentence case capitalises only the first word and proper nouns, and is easier to read in apps and websites.

Things to watch

Acronyms. Decide whether your style is userID or userId, and use it everywhere.
Numbers. A converter may split version2Name differently than you expect, so check the result.
Title Case rules differ between style guides. Short words such as "and", "of" and "the" usually stay lower case.
Case-sensitive systems. Linux file names and URLs treat Report.pdf and report.pdf as two different files.