camelCase writes a compound word with no separators, lowercasing the first word and capitalising the first letter of every word after it, like userProfileId. It is the dominant convention for variable and function names in JavaScript, Java, and many other languages.

How does it split the input into words?

The converter inserts boundaries at spaces, underscores, hyphens, and dots, and also at lowercase-to-uppercase transitions so existing camelCase and PascalCase input is re-tokenised correctly. Runs of digits are treated as their own segment.

Does it keep numbers?

Yes. Digits are preserved and kept attached to their word. A phrase like user 2 id becomes user2Id, and oauth2Token stays oauth2Token after a round trip.

What is the difference between camelCase and PascalCase?

They are identical except for the first word: camelCase leaves the first word lowercase (userId), while PascalCase capitalises it too (UserId). PascalCase is typically used for class and type names.

Does my text get sent to a server?

No. The conversion runs entirely in your browser with JavaScript. Nothing you type is uploaded, logged, or stored anywhere.

camelCase Converter — Gera Tools

camelCase is the most common way to name variables and functions in languages like JavaScript and Java. This converter takes any phrase or differently-cased identifier and rewrites it in clean camelCase, handling spaces, underscores, hyphens, and existing case boundaries automatically.

How it works

The converter normalises your input into a list of lowercase word tokens, then rejoins them with the camelCase rule. Word boundaries are detected several ways:

"user profile id"   -> [user, profile, id]
"user_profile_id"   -> [user, profile, id]
"UserProfileID"     -> [user, profile, id]
"oauth2Token"       -> [oauth, 2, token]

Each token after the first has its initial letter uppercased, the first stays lowercase, and they are concatenated with no separators. So all of the examples above collapse to a single camelCase string such as userProfileId.

Tips and notes

Acronyms are lowercased on the way in, so parseHTMLString becomes parseHtmlString. If you need to preserve an acronym exactly, adjust it after copying. The splitter also separates letters from digits, which keeps results predictable but means you may want to manually rejoin tokens like a version number if you prefer v2 to stay glued to its word.