camelCase Converter

Turn any phrase into a camelCase identifier — free, instant, runs in your browser.

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What is camelCase?

camelCase joins words together with no spaces or separators. The first word is written entirely in lowercase and every following word starts with a single capital letter — the capitals form "humps" like the back of a camel, which is where the name comes from.

camelCase examples

hello world example → helloWorldExample
user first name → userFirstName
convert text to camel case → convertTextToCamelCase

Where is camelCase used?

camelCase is the standard naming convention for variables and functions in JavaScript, TypeScript, Java, C# and many other languages. It is also the most common style for JSON object keys and API field names. Because most programming languages treat spaces and hyphens as operators, joined-word styles like camelCase are essential for identifiers.

The camelCase family

camelCase belongs to a family of naming conventions: PascalCase capitalizes the first word too, while snake_case, kebab-case and CONSTANT_CASE keep words separate with underscores or hyphens. Use the sibling converters linked below to switch between them.

Common mistakes when converting case

Expecting editorial Title Case. The Title Case button capitalizes every word, including short ones: "the lord of the rings" becomes "The Lord Of The Rings". Style guides like AP and Chicago keep words such as "of", "the" and "and" lowercase, so adjust those by hand afterward.
Losing apostrophes. Word-based styles (Title Case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE) split on anything that is not a letter or digit, so "don't stop" turns into "Don T Stop" or "don_t_stop". Remove or restore apostrophes after converting.
Sentence case and proper nouns. Sentence case lowercases the whole text, then capitalizes only the first letter of each sentence, so "i visited NASA in june. it was fun." becomes "I visited nasa in june. It was fun." Re-capitalize names and acronyms yourself.

Pro tips

Rescue a Caps Lock accident with InVeRsE CaSe. Text typed as "hELLO wORLD" while Caps Lock inverted your Shift key flips back to "Hello World" in one click.
Acronyms split cleanly. "HTMLParser" converts to "htmlParser" with camelCase and "html_parser" with snake_case, because the word splitter detects where an acronym ends and the next word begins.
Only letters alternate. In aLtErNaTiNg CaSe, digits, spaces and punctuation stay in place and do not break the pattern: "abc 123 def" becomes "aBc 123 dEf".

Frequently asked questions

What is the difference between camelCase and PascalCase?

Both join words without separators and capitalize each word, but camelCase starts with a lowercase letter (userName) while PascalCase capitalizes the first word too (UserName). camelCase is typical for variables and functions; PascalCase for classes and components.

How are acronyms converted to camelCase?

Acronyms are treated as ordinary words: 'XML HTTP request' becomes 'xmlHttpRequest'. The capitalize rule lowercases the rest of each word, so adjust manually if you need a fully capitalized acronym in the result.

Can camelCase contain numbers?

Yes. Digits are preserved and treated as word boundaries: 'sha 256 hash' becomes 'sha256Hash' and 'version 2 update' becomes 'version2Update'.

Other case converters

Or switch between every style in one place on the Case Converter homepage.