camelCase vs snake_case: Which Naming Convention to Choose?
Published 2026-02-11 · convertcase.in
camelCase and snake_case are the two most common naming conventions in programming. Choosing the right one depends on your language and context.
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1camelCase
myVariableName, getUserProfile — used in: JavaScript, TypeScript, Java, C#, Swift.
2snake_case
my_variable_name, get_user_profile — used in: Python, Ruby, SQL databases, C (many), Rust.
3Readability
Studies show snake_case is slightly more readable than camelCase for most people, especially for longer identifiers.
4API Conventions
REST APIs vary: many JavaScript APIs use camelCase. Python/Django APIs often use snake_case. GraphQL typically uses camelCase.
Frequently Asked Questions
Can I mix camelCase and snake_case?
Only mix them when your language requires it. Within a codebase, consistency is more important than the choice itself.