Developer & Tech

Case Converter

What this does

Convert any text into camelCase, snake_case, kebab-case, PascalCase, CONSTANT_CASE and four more conventions simultaneously.

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Runs in your browser

Calculator inputs

How to use it

Using the case converter

  1. 01

    Paste your phrase

    A column name, file name, heading or existing identifier in ANY convention.

  2. 02

    Read all nine outputs

    Every common programming and writing convention computes at once.

  3. 03

    Copy what you need

    Grab camelCase for variables, kebab-case for URLs, snake_case for SQL columns.

Good to know

Why smart splitting beats naive spaces

Real input arrives pre-mixed: “user_profileImage URL” mixes three conventions in one string. Boundary-aware splitting recovers the underlying words first; handling camel humps, acronyms and punctuation separators; before applying the target convention, so conversions stay correct regardless of source format.

Where each convention lives

  • camelCase; JavaScript/Java variables and functions
  • PascalCase; classes, components, types
  • snake_case; Python, SQL columns, Ruby symbols
  • kebab-case; URLs, CSS classes, file names
  • CONSTANT_CASE; environment variables and true constants

How it's calculated

The math behind this calculator

split on non-alphanumerics + camel/Pascal boundaries → rejoin per convention

Word splitting inserts breaks before uppercase letters following lowercase ones (helloWorld → hello World), splits acronym boundaries (parseHTTPResponse → parse HTTP Response), then divides on every remaining non-alphanumeric character.

The recovered word list rejoins under each convention: camelCase lowercases everything except capitalized tails, PascalCase capitalizes every word, snake/kebab/CONSTANT join with underscores or dashes, and Title/Sentence/UPPER/lower handle human-readable forms; all nine outputs computed together from one paste.

Assumptions & limitations

  • Input intended as identifiers, headings or short phrases; not prose paragraphs.
  • Acronyms longer than two capitals split conservatively (HTTPURL stays one word).
  • Digits count as word characters and attach to adjacent tokens.

Worked example

Three plain words “hello world foo” become helloWorldFoo in camelCase; with all eight other conventions available in the same result panel.

FAQ

Frequently asked questions

How are numbers handled inside words?
Digits attach to their neighboring token: “html5 parser” becomes html5Parser, keeping versioned names intact.
What happens with ALL-CAPS acronyms?
Two-letter caps merge into the previous word sensibly; long runs like HTTPURL stay single tokens since no internal boundary exists. “parseHTTPResponse” correctly splits into parse/HTTP/Response.
Can I convert whole paragraphs?
Technically yes, but the tool targets identifiers and phrases; sentence punctuation vanishes during word splitting, which is usually what you want for variable names.
Is Sentence case really one sentence style?
It capitalizes only the first character of the whole output; the typical headline-vs-sentence distinction you meet in UI copy guidelines.

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