Text Case Converter
Convert text between UPPER, lower, Title, Sentence, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE instantly.
Input
Output
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All case styles explained
- UPPER CASE — every letter capitalized. Useful for emphasis or legacy COBOL-style code.
- lower case — every letter lowercase. Useful for URLs and search-friendly text.
- Title Case — first letter of every word capitalized. Used in book and article titles.
- Sentence case — only the first letter of each sentence capitalized. Standard prose style.
- camelCase — first word lowercase, subsequent words capitalized, no separators (
userName). JavaScript / Java variables. - PascalCase — every word capitalized, no separators (
UserName). Class names in most languages. - snake_case — lowercase words joined with underscores (
user_name). Python, Ruby, Rust. - kebab-case — lowercase words joined with hyphens (
user-name). URLs, CSS classes, HTML attributes. - CONSTANT_CASE — uppercase words joined with underscores (
USER_NAME). Environment variables, constants. - aLtErNaTiNg — alternates uppercase and lowercase for emphasis or comedy.
- iNVERSE — flips the case of every letter.
How to use
- Paste or type text into the left panel.
- Click the case you want on the middle column.
- Copy or download the result from the right panel.
Privacy
Everything runs in your browser — no uploads, no tracking of input content.