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camelCase ConverterConvert text to camelCase for JavaScript variables and function names.

camelCase Converter illustration
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camelCase Converter

Convert text to camelCase for JavaScript variables and function names.

How to Use
1

Enter Text

Paste text, variable names, or phrases to convert.

2

Get camelCase

See your text converted to camelCase format instantly.

3

Copy & Use

Copy the camelCase result for use in your code.

What Is camelCase Converter?

A camelCase converter transforms any text into camelCase format, where the first word is lowercase and each subsequent word starts with a capital letter, with no spaces or separators. camelCase (also called lowerCamelCase) is the standard naming convention for variables and functions in JavaScript, TypeScript, Java, and many other programming languages. Examples: "hello world" becomes "helloWorld", "user-first-name" becomes "userFirstName". This tool handles input in any format — spaces, hyphens, underscores, or mixed case — and produces clean camelCase output.

Why Use Our camelCase Converter?

  • Standard naming convention for JavaScript/TypeScript variables and functions
  • Handles any input format — spaces, hyphens, underscores, or mixed case
  • Essential for maintaining code style consistency
  • Converts multiple lines for batch processing
  • Saves time when renaming variables or converting text to code identifiers

Common Use Cases

JavaScript Development

Convert descriptions or database column names to camelCase for JavaScript variables and functions.

API Integration

Convert snake_case API response keys to camelCase for frontend JavaScript code.

Code Refactoring

Batch rename variables from one naming convention to camelCase.

CSS-in-JS

Convert CSS property names (kebab-case) to camelCase for styled-components or React inline styles.

Technical Guide

camelCase conversion follows these steps: (1) Split the input into words using separators including spaces, hyphens, underscores, dots, and case transitions (detecting where lowercase meets uppercase). (2) Convert the first word entirely to lowercase. (3) For subsequent words, capitalize the first letter and lowercase the rest. (4) Join all words without separators. The regex-based splitting handles transitions like "XMLParser" → ["XML", "Parser"] and "getElementById" → ["get", "Element", "By", "Id"]. Special characters and numbers are preserved when they appear within words. The result is always a valid JavaScript identifier (assuming the first character is a letter).

Tips & Best Practices

  • 1
    camelCase is convention in JavaScript, TypeScript, Java, and C# for local variables
  • 2
    Function names in JavaScript should also use camelCase (e.g., getUserName)
  • 3
    React component props use camelCase (onClick, className, tabIndex)
  • 4
    When converting from snake_case, each underscore-separated word becomes a new camel hump
  • 5
    Acronyms in camelCase vary by convention: "xmlHttpRequest" vs "XMLHttpRequest"

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Convert text to PascalCase for class names and component naming.

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Count words, unique words, characters, and see word frequency in any text.

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Frequently Asked Questions

QWhat is camelCase?
camelCase starts with a lowercase letter and capitalizes the first letter of each subsequent word, with no separators: helloWorld, userName, getFullName.
QWhat's the difference between camelCase and PascalCase?
camelCase starts with a lowercase letter (myVariable), while PascalCase starts with an uppercase letter (MyVariable).
QWhich languages use camelCase?
JavaScript, TypeScript, Java, C#, and Swift use camelCase for variables and methods. Python prefers snake_case.
QHow are acronyms handled?
Acronyms are typically lowercased when they start the identifier (xmlParser) or kept as-is when in the middle (getXMLParser).
QCan I convert multiple lines at once?
Yes, each line is converted separately, producing one camelCase identifier per line.

About camelCase Converter

camelCase Converter is a free online tool from FreeToolkit.ai. All processing happens directly in your browser — your data never leaves your device. No registration required. No ads. Just fast, reliable tools.