camelCase vs snake_case vs kebab-case

Quick Reference

Case	Example	Used In
camelCase	myVariableName	JavaScript, Java, TypeScript
PascalCase	MyClassName	Classes in most languages
snake_case	my_variable_name	Python, Ruby, Rust, SQL
kebab-case	my-css-class	CSS, HTML, URLs, CLI flags
SCREAMING_SNAKE	MAX_RETRY_COUNT	Constants in most languages

When to Use Each

camelCase

Variables and functions in JavaScript, Java, C#, TypeScript:

const userName = "John";
function getUserData() {}

snake_case

Variables and functions in Python, Ruby, database columns:

user_name = "John"
def get_user_data():

kebab-case

CSS classes, URLs, HTML attributes, CLI arguments:

.nav-bar-item { }
/api/user-profile
--max-retries=3

Convert Between Cases

Use our Case Converter to instantly convert text between all these formats.

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