Case converter — upper, lower, title, camel, snake and kebab
Switch text between eleven cases — including the programming ones. Pick a case and the result appears instantly, with an example of each so you can see what you are choosing.
Runs entirely in your browser — nothing is uploaded.
How to use
- Paste your text. Any length, from a single word to a whole document.
- Pick a case. Each button shows a worked example so you can see the result before choosing.
- Copy or chain it. Copy the result, or press "Use as input" to apply another change on top.
Questions
What is the difference between title case and sentence case?
Title case capitalises each significant word ("The Lord of the Rings") and leaves short words like of, the and and in lower case unless they come first. Sentence case capitalises only the first word of each sentence ("The lord of the rings").
Does it understand camelCase input?
Yes. Converting "parseHTMLString" to kebab-case gives "parse-html-string" — word boundaries are detected from the capitalisation, including runs of capitals in acronyms.
Which case should I use for a filename or URL?
kebab-case for URLs and filenames — hyphens are readable and treated as word separators by search engines. snake_case is common in Python and in database columns. camelCase and PascalCase are for code identifiers, not URLs.
What is CONSTANT_CASE for?
Environment variables and compile-time constants in most languages, for example API_BASE_URL. It is snake_case in capitals.