Case Converter
See every case style at once — 17 live previews, one click to copy.
Start typing to see all 17 styles live
Every conversion happens in your browser — nothing is uploaded.
About the Case Converter
Most case converters make you pick one style, convert, then start over when you guessed wrong. CaseWren shows all 17 styles at the same time, updating with every keystroke, so you can scan the grid and copy whichever version fits — no convert button, no round trips.
The options panel understands real editorial needs: choose AP, APA, Chicago or MLA rules for title case, keep proper nouns like iPhone and NASA intact, and add your own brand terms so they survive any conversion. Paste a headline, a variable name or a whole paragraph and watch sentence case, camelCase, snake_case, kebab-case and thirteen more styles render side by side.
How to use it
- 1Type or paste your text into the input box — or drop in a .txt file.
- 2Scan the live grid of 17 case styles; open Options to tune title-case rules, proper nouns and custom terms.
- 3Click the copy icon on any card to copy that result, or use Download all to save every style in one .txt file.
- 4Made a mistake? Press Ctrl+Z to undo and Ctrl+Shift+Z to redo.