Textoolz

snake_case Converter

Convert text to snake_case format used in programming. Free online tool that transforms any text into snake_case naming convention.

0 characters0 words
Output will appear here...

Related Tools

camelCase Converter

Aa

Convert text to camelCase format used in programming. Free online tool that transforms any text into camelCase naming convention.

lowercase Text Converter

Aa

Convert any text to lowercase letters instantly. Free online tool that transforms uppercase and mixed-case text to all lowercase characters.

Title Case Converter

Aa

Convert text to Title Case with proper capitalization rules. Free online tool that capitalizes the first letter of each word intelligently.

UPPERCASE Text Converter

Aa

Convert any text to UPPERCASE letters instantly. Free online tool that transforms lowercase and mixed-case text to all capital letters.

The snake_case converter transforms any text into snake_case format, where all letters are lowercase and words are separated by underscores. For example, "Hello World" becomes "hello_world".

Snake_case is a widely used naming convention in Python, Ruby, Rust, SQL, and C/C++. It's also the standard for environment variables, database column names, and file naming in many projects. This tool handles camelCase input, spaces, hyphens, and other delimiters to produce clean snake_case output.

All processing is done entirely in your browser — nothing is sent to any server.

How to Use snake_case Converter

  1. 1Type or paste text like "Hello World" or "myVariableName" into the input.
  2. 2The text is automatically converted to snake_case in real time.
  3. 3Words are identified from spaces, hyphens, camelCase boundaries, and joined with underscores.
  4. 4Click the Copy button to copy the result to your clipboard.

Frequently Asked Questions

What is snake_case?▾
snake_case is a naming convention where all letters are lowercase and words are separated by underscores (_). Example: 'my_variable_name'. It's widely used in Python, Ruby, Rust, and database schemas.
When should I use snake_case?▾
snake_case is the standard naming convention in Python (PEP 8), Ruby, Rust, and PHP. It's also commonly used for database table and column names, environment variables, and file names.
Can this tool convert camelCase to snake_case?▾
Yes. The converter detects camelCase boundaries (e.g., 'myVariableName') and inserts underscores at the right positions, producing 'my_variable_name'.
How are consecutive uppercase letters handled?▾
Sequences of uppercase letters (like acronyms) are treated as a group. For example, 'XMLParser' becomes 'xml_parser' and 'getHTTPResponse' becomes 'get_http_response'.