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PascalCase to CONSTANT_CASE Converter

Convert PascalCase text to CONSTANT_CASE — one line or a whole list at once.

To convert PascalCase to CONSTANT_CASE, paste your text above and the result updates as you type. UserAccountId becomes USER_ACCOUNT_ID. Word boundaries are detected from the existing casing, so an identifier does not need separators to be split correctly. CONSTANT_CASE marks compile-time constants and environment variables across nearly every language.

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About converting PASCALCASE to CONSTANTCASE

PascalCase names types, classes and React components — the leading capital is what distinguishes a component from an element in JSX. CONSTANT_CASE marks compile-time constants and environment variables across nearly every language. Converting PascalCase to CONSTANT_CASE turns UserAccountId into USER_ACCOUNT_ID; acronyms are the awkward case in every direction, since "userID" and "userId" split differently and only one of them round-trips.

Convert CONSTANTCASE to PASCALCASE insteadOpen the full Case Converter

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