About Case Converter

Convert between camelCase, snake_case, PascalCase, kebab-case, and more. Part of the DevTools Surf developer suite. Browse more tools in the Text / String collection.

Use Cases

• Converting JavaScript camelCase variables to Python snake_case
• Generating CSS class names from PascalCase component names
• Transforming database column names for ORM field mapping
• Creating URL-friendly slugs from title case headings

Tips

• Convert variable names between language naming conventions
• Switch between camelCase and snake_case for API field mapping
• Use kebab-case output for CSS class names and URL slugs

Fun Facts

• CamelCase was popularized by the Smalltalk programming language in the 1980s and later adopted by Java and JavaScript.
• Snake_case gets its name from the underscore characters resembling a snake slithering between words.
• PascalCase is named after the Pascal programming language (1970) by Niklaus Wirth, which used it for type identifiers.

FAQ

Which cases are supported?

camelCase, PascalCase, snake_case, SCREAMING_SNAKE_CASE, kebab-case, Train-Case, dot.case, path/case, and Title Case. All common naming conventions in software.

How does it detect word boundaries?

Three heuristics: existing separators (spaces, underscores, hyphens), lowercase-to-uppercase transitions (camelCase splits), and number boundaries. Works on arbitrary mixed input.

What about acronyms like HTTPServer?

Configurable. Default treats consecutive capitals as a single token (HTTPServer → http_server). Strict mode splits them (HTTPServer → h_t_t_p_server).

Does it preserve numbers?

Yes — numbers are treated as their own token. `user2name` becomes `user_2_name` in snake_case or `user2Name` in camelCase.