CamelCase Converter

Convert text to camelCase (e.g., helloWorld) for programming variables.

helloWorldExample

Continue with Related Tools

snake_case

Python/database naming.

kebab-case

URL & CSS naming.

PascalCase

Class & component names.

What is camelCase?

The camelCase Converter transforms text into camelCase format - a naming convention where the first word starts with a lowercase letter and subsequent words start with uppercase letters, with no spaces or separators. It's widely used in JavaScript, Java, TypeScript, and many other programming languages.

Premium Features

Live Conversion

See results instantly as you type variable names.

File Upload

Load .txt files with multiple variable names to convert.

Batch Mode

Convert multiple variable names line-by-line.

Common Use Cases

JavaScript Variables

Convert variable names to camelCase for JavaScript, TypeScript, and modern web development. Follows ES6+ standards.

JSON Keys

Format JSON object keys in camelCase for API responses, configuration files, and data structures following JSON conventions.

API Parameters

Convert API parameter names to camelCase for RESTful APIs, GraphQL queries, and request/response payloads.

Legacy Code Refactoring

Batch convert snake_case or kebab-case variable names from legacy codebases to modern camelCase naming conventions.

Need Other Programming Cases?

Check out our snake_case, kebab-case, PascalCase, and CONSTANT_CASE converters.

Explore All Case Options →

camelCase Naming Rules

Format:

  • ✓ First word: All lowercase
  • ✓ Subsequent words: First letter uppercase, rest lowercase
  • ✓ No separators: No spaces, hyphens, or underscores
  • ✓ Example: "user first name" → "userFirstName"

Example

Input
user first name
Output
userFirstName

Frequently Asked Questions

What is camelCase?

camelCase is a naming convention where the first word is lowercase and subsequent words start with uppercase letters, with no spaces or punctuation. For example, 'user name' becomes 'userName'. It's named for the 'humps' created by the capital letters.

When should I use camelCase?

Use camelCase for: JavaScript/TypeScript variables and functions, Java methods and variables, JSON object keys, API parameter names, and anywhere the coding style guide requires camelCase naming.

What's the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (myVariableName), while PascalCase starts with an uppercase letter (MyClassName). camelCase is typically used for variables and methods, while PascalCase is used for class and component names.

Can I convert multiple variable names at once?

Yes! Enable Batch Mode to convert multiple variable names line-by-line. Enter each variable name on a new line, and the tool will convert each one to camelCase independently.

How does the tool handle numbers and special characters?

The tool extracts alphanumeric words and joins them in camelCase format. Special characters (spaces, hyphens, underscores) are removed and act as word boundaries. Numbers are preserved within words.

Can I upload a file with variable names?

Yes! Click the Upload icon to load a .txt file (max 1MB) containing variable names to convert. Perfect for batch converting legacy code or documentation.

Is my code saved or stored?

No. All conversion happens 100% client-side in your browser. Your code and variable names never leave your device, ensuring complete privacy and security.

Is this camelCase converter free?

Yes, completely free with no registration, hidden fees, or limitations. Use it for personal or commercial development projects.