Text Case Converter

About Text Case Converter

The Text Case Converter is a free online tool that lets you quickly transform text between a wide variety of case formats. Whether you are writing code, formatting headlines, preparing content for social media, or cleaning up data, changing text case manually is tedious and error-prone. This tool eliminates that effort by performing instant, accurate conversions with a single click. Simply paste or type your text, select the desired case style, and copy the result. Everything runs entirely in your browser, so your data is never sent to any server.

Text case conversion is a surprisingly common need. Writers use it to fix accidentally typed text in all caps. Developers use it to rename variables across different coding conventions. Content creators use it to format titles properly. Database administrators use it to normalize records. No matter your use case, this tool has you covered with twelve distinct conversion modes that handle everything from simple uppercase and lowercase to specialized programming formats like camelCase and snake_case.

Supported Case Types

• UPPERCASE: Converts every letter to its capital form. Example: hello world becomes HELLO WORLD.
• lowercase: Converts every letter to its small form. Example: HELLO WORLD becomes hello world.
• Title Case: Capitalizes the first letter of each word. Example: the quick brown fox becomes The Quick Brown Fox.
• Sentence case: Capitalizes the first letter of each sentence while keeping everything else lowercase. Example: hello world. how are you? becomes Hello world. How are you?.
• camelCase: Joins words together with no separator, capitalizing every word except the first. Example: hello world becomes helloWorld.
• PascalCase: Like camelCase, but the first word is also capitalized. Example: hello world becomes HelloWorld.
• snake_case: Replaces spaces with underscores and lowercases all letters. Example: Hello World becomes hello_world.
• kebab-case: Replaces spaces with hyphens and lowercases all letters. Example: Hello World becomes hello-world.
• CONSTANT_CASE: Replaces spaces with underscores and uppercases all letters. Example: hello world becomes HELLO_WORLD.
• dot.case: Replaces spaces with dots and lowercases all letters. Example: Hello World becomes hello.world.
• tOgGlE cAsE: Alternates between uppercase and lowercase for each character. Example: hello becomes hElLo.
• Reverse text: Reverses the entire string character by character. Example: hello becomes olleh.

Programming Use Cases

Different programming languages and frameworks follow different naming conventions. Using the correct case style is not just about aesthetics; it is a matter of following community standards and ensuring code readability across teams.

• camelCase is the standard naming convention in JavaScript, TypeScript, and Java for variables and function names. For example: getUserName, isValid, totalCount.
• PascalCase is used for class names in most languages including JavaScript, C#, and Java. React component names must also follow PascalCase. For example: UserProfile, HttpClient.
• snake_case is the preferred style in Python, Ruby, and Rust for variable and function names. Database column names also commonly use this format. For example: user_name, created_at.
• kebab-case is the standard for CSS class names, HTML attributes, URL slugs, and file names in many web projects. For example: main-content, btn-primary.
• CONSTANT_CASE is used across nearly all languages for constant values and environment variables. For example: MAX_RETRIES, API_BASE_URL.
• dot.case appears in configuration keys, Java package names, and property file entries. For example: app.config.timeout.

FAQ