Case Converter
Convert text between eleven letter cases, including programming conventions.
Everything runs in your browser. Nothing you type is uploaded or stored.
About this tool
Different contexts want different casing. Prose wants sentence case, headings often want title case, and code has its own conventions — camelCase for variables in many languages, snake_case in others, CONSTANT_CASE for fixed values.
The programming cases here split on existing word boundaries, so helloWorldAgain becomes hello_world_again rather than one run-on token.
How to use it
- Paste your text on the left.
- Pick a case from the dropdown.
- The converted text appears on the right and updates as you type.
Frequently asked questions
Is my text sent to a server?
No. Everything runs in your browser using JavaScript. Nothing you type or paste is uploaded, logged or stored anywhere.
Is there a length limit?
There is no fixed limit — the practical ceiling is your browser's memory. Documents of tens of thousands of words are handled comfortably.
Does it handle non-English text?
Yes. Text is treated as Unicode throughout, so accented Latin, Chinese, Tamil and emoji are all processed correctly rather than mangled.
Does it change my original text?
No. Your input stays exactly as you typed it; the result is produced separately so you can adjust the options and compare.