Convert Text to snake_case
snake_case uses lowercase letters with underscores between words. It is the standard naming convention in Python (PEP 8), Ruby, Rust, and SQL databases. This tool handles input from any format including camelCase, PascalCase, and regular sentences.
Open Case Converter →How to Convert Text to snake_case
- Open the Case Converter tool on ToolPrime
- Enter the text you want to convert
- Choose snake_case from the output options
- Copy the underscore-separated result
Common Use Cases
- Convert JavaScript variable names to Python conventions
- Generate database column names from human-readable labels
- Transform API response keys to match Ruby on Rails models
- Create file names from titles using underscore separation
Frequently Asked Questions
Does it handle consecutive uppercase letters?▾
Yes. "HTMLParser" becomes "html_parser" — the tool detects word boundaries in acronyms and inserts underscores correctly.
What about numbers in the text?▾
Numbers are preserved in place. "version2Update" becomes "version_2_update" with underscores separating numeric boundaries.