Snake Case Text Converter

Convert any text to snake_case instantly. Paste your text below and click snake_case to transform it.

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What is snake_case?

snake_case is a naming convention where words are separated by underscores and all letters are lowercase. For example, "my variable name" becomes "my_variable_name". The name comes from the way the underscores make the text look like a snake lying flat.

When to Use snake_case

  • Python variables and functions — PEP 8 style guide standard
  • Database column names — user_id, created_at, first_name
  • Ruby on Rails — convention for methods and variables
  • File names — my_script.py, config_file.json
  • Environment variables — DATABASE_URL, API_KEY

snake_case vs kebab-case

Both use lowercase words, but snake_case uses underscores (my_variable) while kebab-case uses hyphens (my-variable). snake_case is preferred in Python and databases, while kebab-case is standard for URLs and CSS class names.

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