Case Converter — Convert Text Between 10 Different Case Formats Instantly
Our free text case converter transforms your text into all 10 common case formats simultaneously as you type. Whether you need UPPERCASE for emphasis, camelCase for JavaScript variables, snake_case for Python, kebab-case for CSS classes, or PascalCase for TypeScript classes — type once and see all formats at once. Every format has its own copy button, and a Copy All Formats button exports everything at once.
How to Use the Case Converter
- Type or paste your text into the Input Text area at the top of the page.
- All 10 case format cards update live as you type — no need to press any button.
- Click the Copy button on any format card to copy just that conversion to your clipboard.
- Click Copy All Formats at the bottom to copy all 10 conversions as labeled text.
- The character and word count updates in real time below the input field.
- Clear the input to reset all outputs.
When to Use the Case Converter
- Software development — convert between camelCase, PascalCase, snake_case, and kebab-case for variable and function names.
- API and database work — convert field names between different case conventions when switching between languages.
- Content creation — quickly generate Title Case or Sentence case for headlines and copy.
- CSS class naming — convert descriptive names into valid kebab-case class identifiers.
- Constants and configuration — generate CONSTANT_CASE for environment variables and config keys.
- Data cleaning — normalize inconsistently cased data by standardizing to a single format.
Key Features
- 10 formats at once — UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, dot.case.
- Live conversion — all formats update in real time without clicking any button.
- Individual copy — every format card has its own copy button with a ✓ confirmation.
- Copy All Formats — exports all 10 conversions as labeled multi-line text.
- Character and word count — live character and word count shown below the input.
- Card layout — each format is shown in a separate card with a monospace preview for easy reading.
- Developer-focused — includes all common programming case conventions.
Frequently Asked Questions
What is the difference between camelCase and PascalCase?
camelCase starts with a lowercase letter and capitalizes the first letter of each subsequent word (e.g., myVariableName). PascalCase (also called UpperCamelCase) capitalizes the first letter of every word including the first (e.g., MyClassName). camelCase is used for variables and functions in JavaScript/Java; PascalCase is used for class names and constructor functions.
When would I use snake_case vs kebab-case?
snake_case joins words with underscores and is standard in Python (variable_name), Ruby, and SQL (column_name). kebab-case joins words with hyphens and is standard in CSS (class-name), HTML attributes, and URL slugs. Both are lowercase. Use the one appropriate for your programming language or context.
What is CONSTANT_CASE?
CONSTANT_CASE (also called SCREAMING_SNAKE_CASE) is all uppercase with underscores: MY_CONSTANT_VALUE. It is the standard naming convention for constants and environment variables in JavaScript (const MAX_RETRIES = 3), Python, and many other languages.
Can I convert multi-line text?
Yes. The converter processes the entire textarea content including line breaks. Each line is treated as a separate text block for sentence case detection. Camel/snake/kebab conversions treat newlines as word separators.