Every ecosystem has its own naming convention, and code that crosses a boundary has to change shape. JavaScript wants camelCase properties, Python and SQL want snake_case, CSS classes and URL slugs want kebab-case, class names want PascalCase, and environment variables want CONSTANT_CASE.
The result is a small, repetitive job that shows up whenever you are writing a mapping layer: turning a database column list into TypeScript interface fields, converting an API response into the naming your codebase uses, renaming a batch of files, or generating environment variable names from a config schema. Doing it by hand across thirty field names is slow and produces exactly the kind of typo that compiles fine and fails at runtime.
This converter parses the input into words first, then re-joins them in the style you asked for. That intermediate step is what lets it accept messy input: it splits on underscores, hyphens and spaces, and also on the boundaries inside an existing camelCase or PascalCase identifier, including runs of capitals so that a name like parseHTTPResponse breaks into the words you would expect rather than one unreadable lump.
Every line is converted independently, so you can paste a whole column of field names and get the whole column back. All eight target styles are shown at once, which saves flipping a dropdown when you are not sure which one you actually need.