Case Converter

Transform text between multiple case formats including uppercase, lowercase, title case, camelCase, PascalCase, snake_case, kebab-case, and CONSTANT_CASE with real-time conversion and detailed explanations.

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About Text Case Conversion

Text case conversion is the process of changing the capitalization pattern of letters in text. Our free online case converter supports multiple case formats commonly used in programming, writing, and data processing, making it easy to transform text for any purpose.

Supported Case Formats:

  • UPPERCASE: All letters converted to capital letters (HELLO WORLD)
  • lowercase: All letters converted to small letters (hello world)
  • Title Case: First letter of each word capitalized (Hello World)
  • Sentence case: First letter of each sentence capitalized (Hello world. This is a sentence.)
  • camelCase: First word lowercase, subsequent words capitalized, no spaces (helloWorld)
  • PascalCase: All words capitalized, no spaces (HelloWorld)
  • snake_case: All lowercase with underscores replacing spaces (hello_world)
  • kebab-case: All lowercase with hyphens replacing spaces (hello-world)
  • CONSTANT_CASE: All uppercase with underscores replacing spaces (HELLO_WORLD)

Programming Case Conventions

Different programming languages and contexts use specific case conventions for naming variables, functions, classes, and constants. Understanding these conventions is essential for writing clean, readable code.

Common Programming Uses:

  • camelCase: JavaScript variables, Java methods, C# properties
  • PascalCase: C# classes, JavaScript constructors, .NET namespaces
  • snake_case: Python variables, Ruby methods, database columns
  • kebab-case: CSS classes, HTML attributes, URL slugs
  • CONSTANT_CASE: Constants in most languages, environment variables
  • UPPERCASE: SQL keywords, macro definitions

Language-Specific Conventions:

JavaScript: camelCase for variables, PascalCase for classes
Python: snake_case for variables and functions, PascalCase for classes
Java: camelCase for methods, PascalCase for classes, CONSTANT_CASE for constants
C#: PascalCase for public members, camelCase for private fields
CSS: kebab-case for class names and IDs

Writing and Content Use Cases

Content Creation:

  • Title Case: Article headlines, book titles, proper nouns
  • Sentence case: Regular paragraphs, descriptions, body text
  • UPPERCASE: Emphasis, headings, acronyms, alerts
  • lowercase: Casual writing, modern design, minimalist aesthetics

SEO and Web Content:

  • kebab-case: URL slugs for better SEO (my-article-title)
  • Title Case: Meta titles, page headings
  • Sentence case: Meta descriptions, alt text

Data Processing:

  • snake_case: Database field names, API parameters
  • CONSTANT_CASE: Configuration keys, environment variables
  • camelCase: JSON object properties, API responses

How to Use the Case Converter

  1. Enter Your Text: Type or paste your text into the input field
  2. Choose Options: Select your preferred display options (real-time conversion, show steps, etc.)
  3. View Results: See all case formats instantly or click "Convert" for manual conversion
  4. Copy Results: Click the copy button next to any format to copy it to your clipboard
  5. Try Examples: Click on any example to see how different text formats are converted

Key Features:

  • Real-time Conversion: See results instantly as you type (can be toggled off)
  • Multiple Formats: Convert to 9 different case formats simultaneously
  • Copy Functionality: One-click copying with fallback support for all devices
  • Step-by-step Explanations: Learn how each conversion works
  • Preserve Spacing: Option to maintain original text formatting
  • Mobile-Friendly: Responsive design that works on all devices
  • No Registration: Completely free to use without any sign-up

Frequently Asked Questions

What is the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (firstName), while PascalCase starts with an uppercase letter (FirstName). Both capitalize the first letter of subsequent words without spaces.

When should I use snake_case vs kebab-case?

Use snake_case for programming (variables, functions, file names) and kebab-case for web content (URLs, CSS classes, HTML attributes). Most programming languages don't allow hyphens in identifiers.

What is CONSTANT_CASE used for?

CONSTANT_CASE (also called SCREAMING_SNAKE_CASE) is used for constants, environment variables, and configuration keys. It makes these special values easily identifiable in code.

How does Title Case handle articles and prepositions?

Our Title Case converter capitalizes the first letter of each major word while keeping articles (a, an, the), prepositions (in, on, at), and conjunctions (and, or, but) lowercase unless they're the first or last word.

Can I preserve the original spacing in my text?

Yes! Enable the "Preserve original spacing" option to maintain your text's original whitespace, tabs, and line breaks while only changing the letter case.

Is this case converter free to use?

Absolutely! Our case converter is completely free with no registration required. You can convert unlimited text and access all case formats on any device.

Which case format should I use for URLs?

Use kebab-case for URLs and web slugs (my-article-title) as it's SEO-friendly, readable, and widely supported by web servers and content management systems.

How do I convert text for database field names?

Most databases use snake_case for field names (user_name, created_at) as it's readable and doesn't require special escaping like camelCase might in some database systems.

Can I convert text with special characters and numbers?

Yes! Our converter handles text with numbers, punctuation, and special characters. You can choose to preserve the original spacing or let the converter normalize it according to each format's conventions.