Change Text Case Instantly

Free Online Case Converter

This case converter transforms your text between 10 different formats instantly. Whether you are writing code, formatting headings, or cleaning up pasted text, pick the case you need and the conversion happens in real time. Everything runs in your browser with zero server calls.

UPPERCASE & lowercase

The most common transformations. Use UPPERCASE for headings, acronyms, or emphasis. Use lowercase to normalize text, clean up accidental caps lock, or prepare strings for case-insensitive comparison.

Title Case & Sentence case

Title Case capitalizes the first letter of every word, making it ideal for headlines, article titles, and book names. Sentence case capitalizes only the first letter of each sentence, which is standard for body text and paragraph formatting.

camelCase & PascalCase

Developers use camelCase for JavaScript variables and function names, and PascalCase (also called UpperCamelCase) for class names, React components, and TypeScript interfaces. These formats remove spaces and use capitalization to separate words.

• camelCase — first word lowercase, subsequent words capitalized: getUserName
• PascalCase — every word capitalized: GetUserName

snake_case, kebab-case & CONSTANT_CASE

snake_case is the convention in Python, Ruby, and database column names. kebab-case is used for CSS class names, URL slugs, and file names. CONSTANT_CASE (also called SCREAMING_SNAKE_CASE) is the standard for constants and environment variables in most programming languages.

• snake_case — words separated by underscores: user_first_name
• kebab-case — words separated by hyphens: user-first-name
• CONSTANT_CASE — uppercase with underscores: MAX_RETRY_COUNT

aLtErNaTiNg CaSe

Also known as "spongebob case" or "mocking case," aLtErNaTiNg CaSe toggles between uppercase and lowercase for each letter. Popular in memes and social media for sarcastic emphasis.

Common Use Cases

Programming: Quickly convert variable names between camelCase, snake_case, PascalCase, and kebab-case when switching between languages or coding conventions.

Writing & Editing: Fix text that was accidentally typed in all caps, convert headlines to Title Case, or normalize inconsistent capitalization across a document.

Data Formatting: Standardize column headers, database field names, or configuration keys to a consistent casing convention before importing into a system.