Case Converter

The interactive tool loads here. JavaScript is required to use its controls; the instructions below are available without it.

Change capitalization or turn a phrase into a programming-style identifier. Transformations happen locally and replace the text in the input area, so keep a copy when the original capitalization matters.

How to use this tool

  1. Paste the source text.
  2. Choose UPPER, lower, Title Case, Sentence case or an identifier style such as camelCase or snake_case.
  3. Review names and punctuation, then copy the transformed text.

How to interpret the result

These are mechanical text rules rather than a grammar or language-aware editor. Title case can change acronyms and proper names. Identifier styles split on spaces and common separators and can remove their original layout.

Frequently asked questions

Can I recover the original capitalization?

Not from a lowercase result alone. Keep the source text elsewhere before applying a transform if you may need it again.