Case Converter

Convert text to nine common cases — camelCase, snake_case, Title Case and more — with per-line statistics. Paste once, copy whichever variant you need.

Input

Case

Walkthrough

How to use it

Paste text into the input above.
Pick a target case from the dropdown — output appears instantly for all nine variants.
Click Copy beside the variant you need.
Use Swap input/output to convert the output back the other way.

Use cases

When you'd use this

Naming things. Turn database column names into JavaScript identifiers (snake_case → camelCase) and back.

Consistent UI copy. Normalize titles, headings and dropdown labels to Title Case before shipping.

Clean data entry. Strip uneven caps from pasted user lists when preparing fixtures or CSV files.

FAQ

Common questions

How does it split words?

It splits on everything that isn’t a letter or digit: spaces, dashes, underscores, punctuation and camelCase boundaries. Upper and lower cases apply character-for-character; the word-based cases split and re-join with the right separator.

Is anything sent to a server?

No. Every conversion runs inside this page via JavaScript. All processing is local, so you can paste sensitive strings with confidence, and nothing is logged.

What is CONSTANT_CASE used for?

It is the conventional spelling for environment variables, build targets and compile-time constants (APP_ROOT, MAX_CONNECTIONS). It is snake_case uppercased.