Why case matters
Whether you are fixing an accidental Caps Lock mistake, formatting code identifiers, or preparing headlines for a blog post, changing the case of text by hand is tedious and error-prone. This tool handles the transformation in milliseconds so you can focus on the content itself.
Which case should I use?
Use UPPERCASE for acronyms and shouting emphasis. Use lowercase for casual text or code values. Use Title Case for headings and book titles. Use Sentence case for regular prose and UI labels. Use camelCase and PascalCase for variable and class names in programming. Use snake_case for Python variables and database columns. Use kebab-case for URLs and CSS class names.
Private by design
Your text never leaves your device. The conversion runs entirely in your browser using JavaScript — no servers, no logs, no cookies.
Explore more free tools
Everything below runs in your browser — private, fast and free.