Free Online Case Converter

Convert text between different letter cases instantly. Our free case converter supports UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and dot.case. All conversion happens in your browser — no registration, no installation.

How to Use the Case Converter

1. Type or paste your text into the input area.

2. Select a case format — click any of the conversion buttons to instantly transform your text.

3. Copy — click the copy button to copy the converted text to your clipboard.

Case Formats Explained

UPPERCASE

Converts all letters to capital letters. Example: HELLO WORLD. Common for headings, warnings, and emphasis.

lowercase

Converts all letters to small letters. Example: hello world. Useful for normalizing text and URLs.

Title Case

Capitalizes the first letter of each word. Example: Hello World. Ideal for titles, headings, and book references.

Sentence case

Capitalizes only the first letter of each sentence. Example: Hello world. How are you?. Natural reading format.

camelCase

First word lowercase, subsequent words capitalized with no spaces. Example: helloWorld. Standard for JavaScript and Java variables.

PascalCase

Each word capitalized with no spaces. Example: HelloWorld. Used for class names in C#, Java, and TypeScript.

snake_case

Words separated by underscores, all lowercase. Example: hello_world. Common in Python and Rust.

kebab-case

Words separated by hyphens, all lowercase. Example: hello-world. Used in URLs, CSS classes, and file names.

CONSTANT_CASE

All uppercase with underscores. Example: HELLO_WORLD. Used for constants and configuration values.

Common Use Cases

• Programmers: Convert variable names between camelCase, snake_case, and kebab-case for different languages.
• Writers: Fix accidental caps lock or convert titles to proper Title Case.
• Marketers: Normalize copy for headlines and ad text.
• Students: Fix case issues in essays and assignments.
• Designers: Convert text for UI labels and CSS class names.

Frequently Asked Questions

What is a case converter?

A case converter is a tool that changes the letter case of text. It can convert to UPPERCASE, lowercase, Title Case, camelCase, PascalCase, snake_case, kebab-case, and more.

Is this case converter free?

Yes, completely free with no registration. All conversion happens in your browser — your text never leaves your device.

What case formats are supported?

We support UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, and dot.case.