camelCase / snake_case Converter

What is camelCase / snake_case Converter?

Front ends use camelCase, databases use snake_case, class names use PascalCase, constants use CONSTANT_CASE — renaming fields by hand when moving between systems is slow and error-prone. This tool converts among five naming styles (camel, pascal, snake, kebab, constant), accepts multiple lines of identifiers at once for batch conversion, and correctly splits existing camel words (userId -> user_id).

How to Use

1. Paste identifiers (one per line or a whole block)
2. Choose the target style
3. Copy the result

FAQ

Does userId become user_id in snake_case?

Yes. The tool first splits words at case boundaries and reassembles them: userId -> user_id, and even HTTPServer is split sensibly.

Are non-English fields supported?

Non-Latin characters are preserved and take part in word-boundary handling, but the conversion is designed primarily for English identifiers.

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