TOOLADEX

Case Converter

Convert text between different case formats instantly. Perfect for programming, writing, and formatting text for various purposes.

Select Case Type

Case Types Reference

UPPERCASE

ALL CAPITAL LETTERS

HELLO WORLD

lowercase

all small letters

hello world

Title Case

First Letter Of Each Word

Hello World

Sentence case

First letter of sentence

Hello world. This is a sentence.

camelCase

firstWordLowercase

helloWorld

PascalCase

FirstWordUppercase

HelloWorld

snake_case

words_with_underscores

hello_world

kebab-case

words-with-hyphens

hello-world

CONSTANT_CASE

UPPER_WITH_UNDERSCORES

HELLO_WORLD

dot.case

words.with.dots

hello.world

path/case

words/with/slashes

hello/world

sWaP cAsE

InVeRtEd CaPiTaLiZaTiOn

hELLO wORLD

Table of Contents

What is Case Conversion?

Case conversion is the process of transforming text from one capitalization format to another. Different case styles serve different purposes: programming conventions, readability, SEO optimization, and formatting standards. Our case converter supports 12 different case formats, allowing you to transform text instantly to match your needs.

Whether you're a developer naming variables, a writer formatting titles, or a content creator optimizing text, case conversion helps ensure your text follows the right conventions for your specific use case.

Case Types Explained

UPPERCASE

All letters are capitalized. Useful for headings, emphasis, or when following specific formatting requirements.

Example: "HELLO WORLD"

lowercase

All letters are in lowercase. Common for URLs, filenames, and when you want a subtle, unassuming appearance.

Example: "hello world"

Title Case

The first letter of each word is capitalized. Standard for titles, headings, and book names.

Example: "Hello World"

Sentence case

Only the first letter of the first word in each sentence is capitalized. Standard for paragraphs and body text.

Example: "Hello world. This is a sentence."

camelCase

The first word is lowercase, and subsequent words start with uppercase. Widely used in JavaScript and many programming languages for variable and function names.

Example: "helloWorld"

PascalCase

The first letter of each word is capitalized with no spaces. Used for class names in many programming languages.

Example: "HelloWorld"

snake_case

Words are separated by underscores, all lowercase. Common in Python, Ruby, and database naming conventions.

Example: "hello_world"

kebab-case

Words are separated by hyphens, all lowercase. Popular for CSS class names, URLs, and filenames.

Example: "hello-world"

CONSTANT_CASE

Words are separated by underscores, all uppercase. Used for constants in many programming languages.

Example: "HELLO_WORLD"

dot.case

Words are separated by dots, all lowercase. Used in some naming conventions and file extensions.

Example: "hello.world"

path/case

Words are separated by forward slashes, all lowercase. Useful for creating URL paths or directory structures.

Example: "hello/world"

sWaP cAsE

Inverts the capitalization of each letter. Uppercase becomes lowercase and vice versa. Useful for testing or creating stylistic effects.

Example: "hELLO wORLD"

Use Cases

Case conversion is essential in many contexts:

  • Programming: Convert text to camelCase, PascalCase, or snake_case for variable and function names
  • Web Development: Generate kebab-case class names for CSS or URL-friendly slugs
  • Content Writing: Format titles, headings, and text according to style guides
  • Database Design: Convert table and column names to appropriate naming conventions
  • API Development: Ensure consistent naming conventions across endpoints and parameters
  • File Management: Create consistent, readable filenames following naming conventions
  • SEO Optimization: Format titles and meta descriptions for optimal search engine display
  • Code Refactoring: Quickly convert between naming conventions when working with different codebases

Best Practices

Follow Language Conventions

Different programming languages have different conventions. JavaScript uses camelCase for variables, Python uses snake_case, and C# uses PascalCase for classes. Always follow the conventions of your language or framework.

Be Consistent

Consistency is key. Once you choose a naming convention for a project, stick with it throughout. This improves code readability and maintainability.

Consider Readability

While following conventions is important, readability should never be sacrificed. Choose case styles that make your code or text easy to understand.

Use Appropriate Cases for Context

Different contexts require different cases. URLs work best with kebab-case, constants use CONSTANT_CASE, and user-facing text uses sentence case or title case.

Handle Special Characters

When converting to programming cases (camelCase, snake_case, etc.), special characters are automatically handled. Be aware that punctuation may be removed or replaced to ensure valid identifiers.

Frequently Asked Questions

What's the difference between camelCase and PascalCase?

camelCase starts with a lowercase letter (e.g., "myVariable"), while PascalCase starts with an uppercase letter (e.g., "MyClass"). camelCase is typically used for variables and functions, while PascalCase is used for class names and constructors.

When should I use snake_case vs kebab-case?

snake_case (with underscores) is common in Python, Ruby, and database naming. kebab-case (with hyphens) is popular for CSS class names, URLs, and HTML attributes. Choose based on your language or context conventions.

How does the tool handle special characters and punctuation?

For programming cases (camelCase, snake_case, etc.), special characters are typically removed or replaced with spaces before conversion to ensure valid identifiers. For text cases (uppercase, lowercase, title case), punctuation is preserved.

Can I convert multiple lines of text at once?

Yes! The tool processes all text you enter, including multiple lines. Each case conversion will handle line breaks appropriately based on the case type.

Is there a limit to how much text I can convert?

There's no strict limit, but very long texts (over 100,000 characters) may slow down processing slightly. For best performance, consider processing extremely long documents in sections.

Does the tool work with different languages and character sets?

Yes, the tool works with any language and character set. However, some case conversions (like camelCase and PascalCase) work best with Latin characters. Non-Latin scripts may not follow the same capitalization rules.

Can I edit the converted text before copying?

The converted text fields are read-only to prevent accidental changes. If you need to modify the output, copy it first and then paste it into a text editor. You can also modify the input text and see the updated conversions in real-time.

Is my text stored or saved anywhere?

No. All text processing happens entirely in your browser. Your text is never sent to our servers, stored in a database, or saved anywhere. When you refresh or close the page, your text is cleared.