Text Case Converter

UPPERCASE (all caps) converts all letters to capital form. It's commonly used for headings, acronyms (NASA, FBI), emphasis in informal writing, warning messages, and legal documents. In programming, it's the standard for constants and environment variables. Example: "hello world" becomes "HELLO WORLD".

lowercase converts all letters to small form. It's essential for email addresses, usernames, URL slugs, file names in Unix/Linux systems, and hashtags. Many programming languages are case-sensitive, making lowercase crucial for consistency. Example: "Hello World" becomes "hello world".

Title Case capitalizes the first letter of major words while keeping articles (a, an, the), conjunctions (and, but, or), and short prepositions lowercase. It's the standard for book titles, headlines, blog posts, and professional documents. Example: "the quick brown fox" becomes "The Quick Brown Fox".

Sentence case capitalizes only the first letter of the first word in each sentence, plus proper nouns. It's the standard for body text in articles, emails, documentation, and user interfaces. It provides the most natural readability. Example: "the quick brown fox. jumps over." becomes "The quick brown fox. Jumps over."

camelCase starts with a lowercase letter and capitalizes the first letter of each subsequent word with no spaces. It's the standard convention in JavaScript, Java, Swift, and C++ for variable names, function names, and method names. Example: "user first name" becomes "userFirstName".

PascalCase (UpperCamelCase) capitalizes the first letter of every word with no spaces. It's used for class names in C#, Java, TypeScript, and Python, component names in React, and type definitions. It helps distinguish types from variables. Example: "user profile manager" becomes "UserProfileManager".

snake_case uses lowercase letters with underscores between words. It's the standard in Python (PEP 8), Ruby, Rust, and PHP for variables and function names. Also common in database column names and configuration files. Example: "user email address" becomes "user_email_address".

kebab-case (dash-case) uses lowercase letters with hyphens between words. It's the standard for URLs, SEO-friendly slugs, CSS class names, HTML attributes, npm package names, and CLI commands. Search engines treat hyphens as word separators. Example: "user profile page" becomes "user-profile-page".

CONSTANT_CASE (SCREAMING_SNAKE_CASE) uses all uppercase letters with underscores. It's the universal convention for constants in programming, environment variables, SQL keywords, and configuration keys. The all-caps format makes constants immediately recognizable. Example: "max retry count" becomes "MAX_RETRY_COUNT".

dot.case uses lowercase letters with periods between words. It's commonly used for nested object properties, configuration keys (e.g., app.config.database), package namespaces in Java, and property paths in i18n files. Example: "user settings theme" becomes "user.settings.theme".

path/case uses forward slashes between lowercase words. It's used for file paths, URL routing, RESTful API endpoints, and breadcrumb navigation. It directly represents hierarchical structure in web applications. Example: "user profile settings" becomes "user/profile/settings".

Header-Case (Train-Case or HTTP-Header-Case) capitalizes the first letter of each word with hyphens between them. It's the standard for HTTP headers (Content-Type, Accept-Language), and some configuration formats. Example: "content type" becomes "Content-Type".

aLtErNaTiNg CaSe (SpOnGeBoB case or mocking case) alternates between lowercase and uppercase for each letter. It's primarily used for humorous or sarcastic effect in social media, memes, and informal communication. Not suitable for professional use. Example: "hello world" becomes "hElLo WoRlD".

iNVERSE cASE (reverse case) swaps the case of each letter - uppercase becomes lowercase and vice versa. It's primarily useful for fixing text accidentally typed with Caps Lock on, or for creative text effects. Example: "Hello World" becomes "hELLO wORLD".

Yes! Our bulk text case converter preserves line breaks and processes multiple paragraphs simultaneously. Perfect for converting large documents, code snippets, or Excel data. The converter maintains formatting while transforming the case of your text.