Case Converter
Runs in your browser — your data is never uploaded.
Switch text between UPPERCASE, lowercase, Title Case, Sentence case, and the programmer cases — camelCase, PascalCase, snake_case and kebab-case. Everything runs entirely in your browser, so code identifiers and unpublished copy never leave your device.
0 characters · runs entirely in your browser
How to use Case Converter
- 1
Paste or type your text into the box.
- 2
Choose the case style from the dropdown.
- 3
Click “Convert”, then copy the result or download it as a .txt file.
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Frequently asked questions
What’s the difference between Title Case and Sentence case?+
Title Case capitalizes the first letter of every word (“The Quick Fox”); Sentence case only capitalizes the first letter of each sentence, lowercasing the rest (“The quick fox. It jumps.”).
How does camelCase/PascalCase handle existing separators?+
Spaces, hyphens, underscores and existing camelCase boundaries are all detected and used to split words before re-joining them in the target style — so "hello-world" and "hello_world" both convert the same way.
Is my text uploaded anywhere?+
No. Every conversion runs entirely in your browser using JavaScript — nothing is sent to a server, which matters if you’re converting variable names from proprietary code.