snake_case Converter — Format Text as snake_case
Convert text, variable names, or phrases to snake_case format instantly. The standard naming convention for Python, Ruby, SQL, and many configuration files.
snake_case in Python and Database Development
Python's PEP 8 style guide mandates snake_case for function names, variable names, and module names. Database columns in PostgreSQL and MySQL also follow snake_case by convention. This tool helps you convert human-readable text into properly formatted identifiers quickly.
Converting From Other Formats to snake_case
Working with a JavaScript API that returns camelCase but your Python backend uses snake_case? This tool converts between formats instantly. Paste getUserName and get get_user_name. No regex or manual editing required — just paste, convert, and use in your code.
Frequently Asked Questions
snake_case is a naming convention where words are separated by underscores and all letters are lowercase. Examples: get_user_name, is_valid, total_item_count. It is called snake_case because the underscores resemble a snake lying between words.
Python (PEP 8 standard), Ruby, Rust, and SQL use snake_case for variables, functions, and column names. It is also common in configuration files (YAML, TOML), REST API endpoints, and Linux file naming conventions.