Convert Text to snake_case
A free online snake_case converter for programmers. Paste any string and it converts to snake_case instantly, replacing spaces and hyphens with underscores and lowercasing every word. Useful for Python variables, Ruby methods, and database column names.
How to Use the snake_case Converter
Type or paste your text into the box above. The snake_case output appears instantly. Click the copy button to send the result to your clipboard.
Examples: user profile becomes user_profile. HTTP Request Handler becomes http_request_handler. convert-to-snake-case becomes convert_to_snake_case. Spaces, hyphens, and existing underscores are all treated as word separators.
What Is snake_case?
snake_case is a naming convention where compound words are joined with underscores and every letter is lowercase. first_name, max_retry_count, and is_logged_in are typical snake_case identifiers. It is the dominant style in Python, Ruby, Rust, and most SQL databases.
When to Use snake_case
Use snake_case for variables, function names, and method names in Python, Ruby, and Rust. Use it for database column names, JSON keys when working with Python-based APIs, and most config file keys. C-family languages (JavaScript, Java, C#) use camelCase instead.
Other Text Converters
For other text transformations: title case converter, sentence case, lowercase, UPPERCASE, camelCase, snake_case, dot.case, hyphenated (kebab-case), and invert case.
