Snake Case Converter

Convert text to snake_case

Snake case writes words in lowercase and joins them with underscores. Hello world example becomes hello_world_example.

This convention is common for database columns, Python variables, configuration keys, command options, filenames, and systems where spaces are inconvenient.

How to create snake case

1. Enter a phrase or existing identifier.
2. Convert recognized word boundaries to underscores.
3. Review acronyms, numbers, and special characters in the result.

The converter normalizes case and separators. It does not check whether the output is a reserved word or a valid identifier in a particular language or database.

Snake case FAQ

What is screaming snake case?

Constant Case uses the same underscore separators but uppercase words, such as MAX_RETRY_COUNT.

How is snake_case different from kebab-case?

Kebab Case uses hyphens instead of underscores.

Are consecutive spaces converted to repeated underscores?

Recognized separators are normalized around inferred words rather than copied literally.