snake_case Converter
Convert any text to snake_case instantly. Transform strings for Python variable naming. Free online tool.
How to Use This snake_case Converter
- Paste or type your text into the input area
- The text is automatically converted to snake_case
- Click "Copy" to copy the snake_case text to your clipboard
- Use the "Clear" button to start over
What is snake_case?
snake_case is a naming convention where words are separated by underscores (_) and all letters are lowercase. For example, "user profile name" becomes "user_profile_name". The name comes from the visual appearance of underscores connecting words, resembling a snake. It's the standard naming convention in Python and commonly used for database column names, file names, and configuration keys.
Common Use Cases
- Python Variables: Standard naming convention for variables and functions
- Database Columns: Column names in SQL databases
- File Names: Naming files in a consistent, readable format
- Configuration Files: Keys in YAML, JSON, or INI files
- Environment Variables: Often use SCREAMING_SNAKE_CASE (all uppercase)
- Ruby Programming: Method and variable names in Ruby
Features
- Instant snake_case conversion as you type
- Replaces spaces and special characters with underscores
- Converts all letters to lowercase
- One-click copy to clipboard
- 100% client-side - your text stays private
- No registration or download required
- Works on all devices and browsers
snake_case Variations
- snake_case: All lowercase - "user_profile_name"
- SCREAMING_SNAKE_CASE: All uppercase - "USER_PROFILE_NAME" (for constants)
- Usage: Lowercase for variables, uppercase for constants
Programming Language Conventions
- Python: snake_case for variables, functions, and methods (PEP 8 standard)
- Ruby: snake_case for methods and variables
- Rust: snake_case for variables and functions
- SQL: Often uses snake_case for table and column names
- C/C++: Mixed usage, but snake_case is common for certain projects
Why Use snake_case?
- Readability: Underscores make word boundaries clear
- Case-Insensitive Systems: Works well in systems that ignore case
- File Systems: Safe for all operating systems (no special characters)
- URLs: More readable than camelCase in URLs
Frequently Asked Questions
What happens to consecutive spaces?
Multiple consecutive spaces are converted to a single underscore. For example, "user name" (with multiple spaces) becomes "user_name".
Can I convert camelCase to snake_case?
Yes! This tool handles camelCase input and properly converts it to snake_case. For example, "userProfileName" becomes "user_profile_name".
Is my text stored or sent to a server?
No. This tool runs entirely in your browser using JavaScript. Your text is never uploaded to a server or stored anywhere, ensuring complete privacy and security.