snake_case Converter
Transform any text into snake_case by replacing spaces and case boundaries with underscores. Essential for writing SQL queries, Python variables, and configuration files.
Last reviewed: 2026-07-23
Processed locally in your browser. Nothing is sent to a server.
Character count: 0 · Word count: 0 · Line count: 0
How to use
- Enter the string or variable you want to convert.
- Review the snake_case output.
- Click copy to use it in your code.
Examples
From camelCase
Input
userProfileImage
Output
user_profile_image
Why use snake_case?
snake_case (or underscore_case) separates words with an underscore. It is highly readable and is the standard convention for Python (PEP 8), Ruby, SQL database tables and columns, and many DevOps configuration files.
Frequently asked questions
Is my data uploaded?+
No. Code and data tools run locally in your browser whenever possible.
Related guides
Learn more about this topic in our blog.
Developer
What Is camelCase? A Developer's Guide
camelCase joins words without spaces or underscores. See how it works in JavaScript, JSON, and API fields — and how it differs from PascalCase and snake_case.
Developer
The Complete Guide to Developer Naming Conventions
camelCase, PascalCase, snake_case, kebab-case, and dot.case — when to use each style, with examples for JavaScript, Python, URLs, databases, and APIs.