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Case Converter
Switch between upper, lower, camel, snake and other case styles.
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Processed locallyAbout Case Converter
Switches between upper, lower, title, camel, snake, kebab and more, updating as you type.
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Nine forms at once: UPPER, lower, Title Case, Sentence case, plus camelCase / PascalCase / snake_case / kebab-case / CONSTANT_CASE.
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The five identifier forms split on **case boundaries**: `helloWorld` becomes `hello_world` and `HTTPServer` becomes `http_server`, so pasting camelCase straight in gives what you wanted.
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Identifier forms keep ASCII letters and digits only — CJK, emoji and punctuation are dropped (`中文abc测试` → `abc`) — while the other four forms leave those characters alone.
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Paste the text
All nine results are computed at once and update as you type, with nothing to switch between.
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Copy the row you need
Each row has its own copy button.
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Use it for identifiers
camelCase for variables, kebab-case for file names, CONSTANT_CASE for constants — paste and go.
Because the publishing rules that keep a / of / the lowercase differ between style guides, so there is no single correct answer. This does the plainest thing — every word capitalised — and you can adjust the few you care about.
Identifiers (variable and file names) are expected to be ASCII: many languages accept Unicode identifiers, but toolchains, URLs and command lines often break on them. Those forms keep letters and digits only. For a keeper-of-CJK variant, use slug-generator, which preserves them.
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