Text Tools
Case Converter
Convert text between common letter cases.
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About this tool
Switch between UPPER, lower, Title, Sentence, kebab-case, snake_case, and camelCase in one click. Useful for renaming variables, normalising headings, and cleaning up pasted content.
Frequently asked questions
Does Title Case capitalise short connector words?
No. Articles, conjunctions, and short prepositions (a, an, the, and, or, of, in) stay lowercase unless they are the first or last word.
Which case is best for filenames?
kebab-case (hyphen-separated) is the safest cross-platform choice for filenames and URLs.
Can I convert programmatic identifiers?
Yes. snake_case and camelCase preserve word boundaries when you split or join identifiers across naming conventions.