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uppercasesnakecase

UPPERCASE to snake_case Converter

Convert UPPERCASE text to snake_case — one line or a whole list at once.

To convert UPPERCASE to snake_case, paste your text above and the result updates as you type. USER ACCOUNT ID becomes user_account_id. Word boundaries are detected from the existing casing, so an identifier does not need separators to be split correctly. snake_case is standard in Python, Ruby and SQL, where identifiers are frequently case-insensitive and underscores survive where capitals do not.

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About converting UPPERCASE to SNAKECASE

Full uppercase is a display choice, not a naming convention. Set it in CSS with text-transform rather than in the data, so the original stays searchable. snake_case is standard in Python, Ruby and SQL, where identifiers are frequently case-insensitive and underscores survive where capitals do not. Converting UPPERCASE to snake_case turns USER ACCOUNT ID 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 SNAKECASE to UPPERCASE insteadOpen the full Case Converter

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