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Constant Case Converter

What is CONSTANT_CASE?

CONSTANT_CASE (also known as SCREAMING_SNAKE_CASE or UPPER_CASE) is a naming convention where all letters are capitalized and words are separated by underscores. It's commonly used in programming for constants and configuration variables.

Examples:

  • • "hello world" → HELLO_WORLD
  • • "my constant name" → MY_CONSTANT_NAME
  • • "max retry count" → MAX_RETRY_COUNT

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What is online Constant Case Converter?

The Constant Case Converter is a free online tool that transforms any text into CONSTANT_CASE format (also known as SCREAMING_SNAKE_CASE or UPPER_CASE). This naming convention capitalizes all letters and separates words with underscores, making it perfect for defining constants, environment variables, and configuration settings in programming. The tool intelligently handles various input formats including camelCase, PascalCase, kebab-case, and regular text, automatically converting them to the proper CONSTANT_CASE format used across multiple programming languages like JavaScript, Python, Java, C++, and more.

How to use Constant Case Converter?

  1. Enter Your Text: Paste or type any text into the input field. You can enter regular sentences, variable names, camelCase text, or any other format.
  2. Click Convert: Press the "Convert to CONSTANT_CASE" button or use the keyboard shortcut (Ctrl/Cmd + Enter) to instantly transform your text.
  3. Copy the Result: The converted CONSTANT_CASE text appears in the output field. Click the "Copy" button to copy it to your clipboard.
  4. Use in Your Code: Paste the converted constant name directly into your source code, configuration files, or documentation.

Use Cases for Constant Case Converter

Frequently Asked Questions

Have questions about Constant Case Converter? Find answers to the most common queries below.

CONSTANT_CASE (also called SCREAMING_SNAKE_CASE or UPPER_CASE) is a naming convention where all letters are capitalized and words are separated by underscores. It's widely used in programming to define constants, environment variables, and configuration settings because the uppercase format makes these unchangeable values visually distinct from regular variables, improving code readability and maintainability.
The converter intelligently processes various input formats including regular text, camelCase, PascalCase, kebab-case, and snake_case. It automatically splits compound words, removes special characters, replaces spaces and separators with underscores, converts everything to uppercase, and cleans up multiple consecutive underscores to produce clean CONSTANT_CASE output.
Yes! This tool is perfect for creating environment variable names. Environment variables typically follow CONSTANT_CASE naming conventions (like DATABASE_URL, API_KEY, MAX_CONNECTIONS), and this converter ensures your variable names are properly formatted for .env files, system configurations, and containerized applications.
CONSTANT_CASE is used across virtually all programming languages including JavaScript, TypeScript, Python, Java, C, C++, C#, PHP, Ruby, Go, Rust, Swift, Kotlin, and many others. It's a universal convention for defining constants, making your code more readable and following industry-standard best practices.
The converter removes special characters except underscores while preserving numbers. For example, "API key #1" becomes "API_KEY_1". This ensures the output is valid for use as variable names in most programming languages, which don't allow special characters in identifiers.
Yes! You can press Ctrl+Enter (Windows/Linux) or Cmd+Enter (Mac) while the input field is focused to instantly convert your text without clicking the button. This shortcut speeds up your workflow when converting multiple constants.
While the tool processes all input text as a single constant, it's designed to convert one constant name at a time for best results. For multiple constants, convert them individually to ensure each follows proper naming conventions. This approach prevents unintended merging of separate constant names.
CONSTANT_CASE is essentially uppercase snake_case. Both use underscores to separate words, but CONSTANT_CASE uses ALL CAPITAL LETTERS (like MAX_RETRY_COUNT) while snake_case uses lowercase letters (like max_retry_count). CONSTANT_CASE is specifically used for constants and immutable values, while snake_case is used for regular variables and function names in languages like Python.