What is the difference between camelCase, snake_case, and kebab-case?

camelCase joins words without spaces and capitalizes each word after the first (e.g. myVariableName), standard in JavaScript and Java. snake_case joins words using lowercase letters separated by underscores (e.g. my_variable_name), the standard in Python and SQL. kebab-case joins words using hyphens (e.g. my-variable-name), standard in CSS classes, HTML attributes, and web URL slugs.

Can I convert multiple lines of variable names simultaneously?

Yes. Check the 'Batch Multi-Line Mode' toggle to transform entire lists of variable names, database keys, or CSS classes line-by-line in a single action.

Universal Case Converter

Transform variable identifiers, database columns, and strings across all major programming naming conventions in real-time. Simultaneous multi-box output with instant one-click copy.

9 Popular Cases Real-Time As You Type Batch Multi-Line Mode One-Click Copy

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camelCase (JS / Java)

snake_case (Python / SQL)

kebab-case (CSS / URLs)

PascalCase (C# / Classes)

CONSTANT_CASE (Env Vars)

Title Case (Headlines)

Sentence case (Prose)

dot.case (Properties)

path/case (File Paths)

Case Quick Reference

camelCase: JS variables & functions
snake_case: Python PEP 8 & Postgres
kebab-case: CSS classes & URLs
PascalCase: React components & Types
SCREAMING_SNAKE: Env constants

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The Developer's Guide to Programming Naming Conventions

In software engineering, consistency in naming conventions is critical for readable, maintainable source code. Because spaces cannot be used in computer identifiers, programming languages and frameworks have adopted distinct capitalization and delimiter patterns over time.

Our Universal Case Converter solves the daily chore of translating strings between different layers of the software stack—such as converting a PostgreSQL snake_case column into a JavaScript camelCase object property or a CSS kebab-case class name.

Overview of Major Naming Standards

Case Standard	Example Identifier	Primary Programming Domains
camelCase	`userProfileManager`	JavaScript, TypeScript, Java, Swift, Kotlin, Go methods
snake_case	`user_profile_manager`	Python (PEP 8), Ruby, Rust, SQL databases, C libraries
kebab-case	`user-profile-manager`	CSS selectors, HTML custom elements, REST URL slugs, npm package names
PascalCase	`UserProfileManager`	React/Vue components, C# classes, TypeScript types & interfaces
CONSTANT_CASE	`USER_PROFILE_MANAGER`	Global constants, Docker environment variables, Redux action types
dot.case	`user.profile.manager`	Java package names, Spring properties, configuration keys

Universal Case Converter

Case Quick Reference

Developer Utilities

The Developer's Guide to Programming Naming Conventions

Overview of Major Naming Standards

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