Paste your text, pick a case style — the result appears instantly. Supports 8 case formats including camelCase and snake_case.
0 words · 0 characters
How to use the Case Converter
Type or paste your text into the box, then click any case format button above. The text updates instantly — no button to confirm, no page reload. You can switch between formats as many times as you like, then copy the result with one click.
All supported case formats
Format
Example output
Common use
UPPERCASE
HELLO WORLD
Headlines, acronyms, emphasis
lowercase
hello world
URLs, general text normalization
Title Case
Hello World
Article titles, headings, names
Sentence case
Hello world
Standard prose, paragraphs
camelCase
helloWorld
JavaScript variables, JSON keys
PascalCase
HelloWorld
Class names, React components
snake_case
hello_world
Python variables, database columns
kebab-case
hello-world
CSS classes, HTML attributes, URLs
Frequently asked questions
No. All conversion happens locally in your browser using JavaScript. Your text is never sent to any server or stored anywhere.
Title Case capitalizes the first letter of every word. It's commonly used for article headlines, book titles, and proper headings. Example: "the quick brown fox" becomes "The Quick Brown Fox".
Both join words without spaces. camelCase starts with a lowercase letter (helloWorld) and is common in JavaScript. PascalCase starts with an uppercase letter (HelloWorld) and is common for class names and React components.
No limit. You can paste entire documents. All processing happens in your browser so performance depends only on your device.